Home / 10,720.90-16,061.88-10,487.62

Finding the Fourth Proportional to 10,720.90, 16,061.88 and 10,487.62

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Solution

The fourth proportional to 10,720.90, 16,061.88 and 10,487.62 is: 15,712.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.90 : 16,061.88 = 10,487.62 : x
  2. Step 2: Convert to fraction form
    10,720.90/16,061.88 = 10,487.62/x
  3. Step 3: Cross multiply
    10,720.90x = 16,061.88 × 10,487.62
  4. Step 4: Simplify right side
    10,720.90x = 168,450,893.93
  5. Step 5: Solve for x
    x = 168,450,893.93/10,720.90
  6. Step 6: Final answer
    x = 15,712.38

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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.