Home / 15,428.76-23,120.82-8,402.84

Finding the Fourth Proportional to 15,428.76, 23,120.82 and 8,402.84

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Solution

The fourth proportional to 15,428.76, 23,120.82 and 8,402.84 is: 12,592.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,428.76 : 23,120.82 = 8,402.84 : x
  2. Step 2: Convert to fraction form
    15,428.76/23,120.82 = 8,402.84/x
  3. Step 3: Cross multiply
    15,428.76x = 23,120.82 × 8,402.84
  4. Step 4: Simplify right side
    15,428.76x = 194,280,551.13
  5. Step 5: Solve for x
    x = 194,280,551.13/15,428.76
  6. Step 6: Final answer
    x = 12,592.10

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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.