Home / 28,221.52-38,931.60-18,017.32

Finding the Fourth Proportional to 28,221.52, 38,931.60 and 18,017.32

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Solution

The fourth proportional to 28,221.52, 38,931.60 and 18,017.32 is: 24,854.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.52 : 38,931.60 = 18,017.32 : x
  2. Step 2: Convert to fraction form
    28,221.52/38,931.60 = 18,017.32/x
  3. Step 3: Cross multiply
    28,221.52x = 38,931.60 × 18,017.32
  4. Step 4: Simplify right side
    28,221.52x = 701,443,095.31
  5. Step 5: Solve for x
    x = 701,443,095.31/28,221.52
  6. Step 6: Final answer
    x = 24,854.90

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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.