Home / 12,639,190-17,442,530.96-7,133,905.12

Finding the Fourth Proportional to 12,639,190, 17,442,530.96 and 7,133,905.12

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Solution

The fourth proportional to 12,639,190, 17,442,530.96 and 7,133,905.12 is: 9,845,042.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639,190 : 17,442,530.96 = 7,133,905.12 : x
  2. Step 2: Convert to fraction form
    12,639,190/17,442,530.96 = 7,133,905.12/x
  3. Step 3: Cross multiply
    12,639,190x = 17,442,530.96 × 7,133,905.12
  4. Step 4: Simplify right side
    12,639,190x = 124,433,360,921,302.53
  5. Step 5: Solve for x
    x = 124,433,360,921,302.53/12,639,190
  6. Step 6: Final answer
    x = 9,845,042.36

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.