Home / 15,349.22-21,181.40-8,635.14

Finding the Fourth Proportional to 15,349.22, 21,181.40 and 8,635.14

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Solution

The fourth proportional to 15,349.22, 21,181.40 and 8,635.14 is: 11,916.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,349.22 : 21,181.40 = 8,635.14 : x
  2. Step 2: Convert to fraction form
    15,349.22/21,181.40 = 8,635.14/x
  3. Step 3: Cross multiply
    15,349.22x = 21,181.40 × 8,635.14
  4. Step 4: Simplify right side
    15,349.22x = 182,904,354.40
  5. Step 5: Solve for x
    x = 182,904,354.40/15,349.22
  6. Step 6: Final answer
    x = 11,916.20

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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.