Home / 20,532.05-28,337.10-11,580.38

Finding the Fourth Proportional to 20,532.05, 28,337.10 and 11,580.38

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Solution

The fourth proportional to 20,532.05, 28,337.10 and 11,580.38 is: 15,982.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,532.05 : 28,337.10 = 11,580.38 : x
  2. Step 2: Convert to fraction form
    20,532.05/28,337.10 = 11,580.38/x
  3. Step 3: Cross multiply
    20,532.05x = 28,337.10 × 11,580.38
  4. Step 4: Simplify right side
    20,532.05x = 328,154,307.25
  5. Step 5: Solve for x
    x = 328,154,307.25/20,532.05
  6. Step 6: Final answer
    x = 15,982.54

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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.