Home / 38,316.16-57,355.44-20,742.40

Finding the Fourth Proportional to 38,316.16, 57,355.44 and 20,742.40

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Solution

The fourth proportional to 38,316.16, 57,355.44 and 20,742.40 is: 31,049.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,316.16 : 57,355.44 = 20,742.40 : x
  2. Step 2: Convert to fraction form
    38,316.16/57,355.44 = 20,742.40/x
  3. Step 3: Cross multiply
    38,316.16x = 57,355.44 × 20,742.40
  4. Step 4: Simplify right side
    38,316.16x = 1,189,689,478.66
  5. Step 5: Solve for x
    x = 1,189,689,478.66/38,316.16
  6. Step 6: Final answer
    x = 31,049.29

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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.