Home / 38,437.20-57,655.80-13,505.40

Finding the Fourth Proportional to 38,437.20, 57,655.80 and 13,505.40

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Solution

The fourth proportional to 38,437.20, 57,655.80 and 13,505.40 is: 20,258.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,437.20 : 57,655.80 = 13,505.40 : x
  2. Step 2: Convert to fraction form
    38,437.20/57,655.80 = 13,505.40/x
  3. Step 3: Cross multiply
    38,437.20x = 57,655.80 × 13,505.40
  4. Step 4: Simplify right side
    38,437.20x = 778,664,641.32
  5. Step 5: Solve for x
    x = 778,664,641.32/38,437.20
  6. Step 6: Final answer
    x = 20,258.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.