Home / 20,528.67-28,332.08-11,575.99

Finding the Fourth Proportional to 20,528.67, 28,332.08 and 11,575.99

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Solution

The fourth proportional to 20,528.67, 28,332.08 and 11,575.99 is: 15,976.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.67 : 28,332.08 = 11,575.99 : x
  2. Step 2: Convert to fraction form
    20,528.67/28,332.08 = 11,575.99/x
  3. Step 3: Cross multiply
    20,528.67x = 28,332.08 × 11,575.99
  4. Step 4: Simplify right side
    20,528.67x = 327,971,874.76
  5. Step 5: Solve for x
    x = 327,971,874.76/20,528.67
  6. Step 6: Final answer
    x = 15,976.28

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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.