Home / 28,156.10-38,854.13-16,221.15

Finding the Fourth Proportional to 28,156.10, 38,854.13 and 16,221.15

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Solution

The fourth proportional to 28,156.10, 38,854.13 and 16,221.15 is: 22,384.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.10 : 38,854.13 = 16,221.15 : x
  2. Step 2: Convert to fraction form
    28,156.10/38,854.13 = 16,221.15/x
  3. Step 3: Cross multiply
    28,156.10x = 38,854.13 × 16,221.15
  4. Step 4: Simplify right side
    28,156.10x = 630,258,589.74
  5. Step 5: Solve for x
    x = 630,258,589.74/28,156.10
  6. Step 6: Final answer
    x = 22,384.45

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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.