Home / 28,106.38-42,159.54-8,398.75

Finding the Fourth Proportional to 28,106.38, 42,159.54 and 8,398.75

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Solution

The fourth proportional to 28,106.38, 42,159.54 and 8,398.75 is: 12,598.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.38 : 42,159.54 = 8,398.75 : x
  2. Step 2: Convert to fraction form
    28,106.38/42,159.54 = 8,398.75/x
  3. Step 3: Cross multiply
    28,106.38x = 42,159.54 × 8,398.75
  4. Step 4: Simplify right side
    28,106.38x = 354,087,436.58
  5. Step 5: Solve for x
    x = 354,087,436.58/28,106.38
  6. Step 6: Final answer
    x = 12,598.12

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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.