Home / 22,099.90-30,487.80-13,142.32

Finding the Fourth Proportional to 22,099.90, 30,487.80 and 13,142.32

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Solution

The fourth proportional to 22,099.90, 30,487.80 and 13,142.32 is: 18,130.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,099.90 : 30,487.80 = 13,142.32 : x
  2. Step 2: Convert to fraction form
    22,099.90/30,487.80 = 13,142.32/x
  3. Step 3: Cross multiply
    22,099.90x = 30,487.80 × 13,142.32
  4. Step 4: Simplify right side
    22,099.90x = 400,680,423.70
  5. Step 5: Solve for x
    x = 400,680,423.70/22,099.90
  6. Step 6: Final answer
    x = 18,130.42

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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.