Home / 34,287.12-47,316.60-20,140.20

Finding the Fourth Proportional to 34,287.12, 47,316.60 and 20,140.20

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Solution

The fourth proportional to 34,287.12, 47,316.60 and 20,140.20 is: 27,793.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,287.12 : 47,316.60 = 20,140.20 : x
  2. Step 2: Convert to fraction form
    34,287.12/47,316.60 = 20,140.20/x
  3. Step 3: Cross multiply
    34,287.12x = 47,316.60 × 20,140.20
  4. Step 4: Simplify right side
    34,287.12x = 952,965,787.32
  5. Step 5: Solve for x
    x = 952,965,787.32/34,287.12
  6. Step 6: Final answer
    x = 27,793.70

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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.