Home / 15,459.57-21,334.12-8,385.84

Finding the Fourth Proportional to 15,459.57, 21,334.12 and 8,385.84

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Solution

The fourth proportional to 15,459.57, 21,334.12 and 8,385.84 is: 11,572.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.57 : 21,334.12 = 8,385.84 : x
  2. Step 2: Convert to fraction form
    15,459.57/21,334.12 = 8,385.84/x
  3. Step 3: Cross multiply
    15,459.57x = 21,334.12 × 8,385.84
  4. Step 4: Simplify right side
    15,459.57x = 178,904,495.90
  5. Step 5: Solve for x
    x = 178,904,495.90/15,459.57
  6. Step 6: Final answer
    x = 11,572.41

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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.