Home / 30,941.02-42,688.80-18,190.12

Finding the Fourth Proportional to 30,941.02, 42,688.80 and 18,190.12

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Solution

The fourth proportional to 30,941.02, 42,688.80 and 18,190.12 is: 25,096.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,941.02 : 42,688.80 = 18,190.12 : x
  2. Step 2: Convert to fraction form
    30,941.02/42,688.80 = 18,190.12/x
  3. Step 3: Cross multiply
    30,941.02x = 42,688.80 × 18,190.12
  4. Step 4: Simplify right side
    30,941.02x = 776,514,394.66
  5. Step 5: Solve for x
    x = 776,514,394.66/30,941.02
  6. Step 6: Final answer
    x = 25,096.60

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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.