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Finding the Fourth Proportional to 12,901.58, 17,804.31 and 7,236.53

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Solution

The fourth proportional to 12,901.58, 17,804.31 and 7,236.53 is: 9,986.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.58 : 17,804.31 = 7,236.53 : x
  2. Step 2: Convert to fraction form
    12,901.58/17,804.31 = 7,236.53/x
  3. Step 3: Cross multiply
    12,901.58x = 17,804.31 × 7,236.53
  4. Step 4: Simplify right side
    12,901.58x = 128,841,423.44
  5. Step 5: Solve for x
    x = 128,841,423.44/12,901.58
  6. Step 6: Final answer
    x = 9,986.48

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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.