Home / 38,445.47-57,686.63-20,915.27

Finding the Fourth Proportional to 38,445.47, 57,686.63 and 20,915.27

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Solution

The fourth proportional to 38,445.47, 57,686.63 and 20,915.27 is: 31,382.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,445.47 : 57,686.63 = 20,915.27 : x
  2. Step 2: Convert to fraction form
    38,445.47/57,686.63 = 20,915.27/x
  3. Step 3: Cross multiply
    38,445.47x = 57,686.63 × 20,915.27
  4. Step 4: Simplify right side
    38,445.47x = 1,206,531,048.83
  5. Step 5: Solve for x
    x = 1,206,531,048.83/38,445.47
  6. Step 6: Final answer
    x = 31,382.92

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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.