Home / 28,165.60-38,870.40-16,229.71

Finding the Fourth Proportional to 28,165.60, 38,870.40 and 16,229.71

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Solution

The fourth proportional to 28,165.60, 38,870.40 and 16,229.71 is: 22,398.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,165.60 : 38,870.40 = 16,229.71 : x
  2. Step 2: Convert to fraction form
    28,165.60/38,870.40 = 16,229.71/x
  3. Step 3: Cross multiply
    28,165.60x = 38,870.40 × 16,229.71
  4. Step 4: Simplify right side
    28,165.60x = 630,855,319.58
  5. Step 5: Solve for x
    x = 630,855,319.58/28,165.60
  6. Step 6: Final answer
    x = 22,398.08

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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.