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Finding the Fourth Proportional to 11,355.40, 17,008.80 and 10,124.20

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Solution

The fourth proportional to 11,355.40, 17,008.80 and 10,124.20 is: 15,164.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.40 : 17,008.80 = 10,124.20 : x
  2. Step 2: Convert to fraction form
    11,355.40/17,008.80 = 10,124.20/x
  3. Step 3: Cross multiply
    11,355.40x = 17,008.80 × 10,124.20
  4. Step 4: Simplify right side
    11,355.40x = 172,200,492.96
  5. Step 5: Solve for x
    x = 172,200,492.96/11,355.40
  6. Step 6: Final answer
    x = 15,164.63

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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.