Home / 28,106.64-42,159.96-12,327.12

Finding the Fourth Proportional to 28,106.64, 42,159.96 and 12,327.12

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Solution

The fourth proportional to 28,106.64, 42,159.96 and 12,327.12 is: 18,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.64 : 42,159.96 = 12,327.12 : x
  2. Step 2: Convert to fraction form
    28,106.64/42,159.96 = 12,327.12/x
  3. Step 3: Cross multiply
    28,106.64x = 42,159.96 × 12,327.12
  4. Step 4: Simplify right side
    28,106.64x = 519,710,886.12
  5. Step 5: Solve for x
    x = 519,710,886.12/28,106.64
  6. Step 6: Final answer
    x = 18,490.68

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Similar ratio
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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.