Home / 20,488.48-28,265.52-12,528.16

Finding the Fourth Proportional to 20,488.48, 28,265.52 and 12,528.16

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Solution

The fourth proportional to 20,488.48, 28,265.52 and 12,528.16 is: 17,283.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.48 : 28,265.52 = 12,528.16 : x
  2. Step 2: Convert to fraction form
    20,488.48/28,265.52 = 12,528.16/x
  3. Step 3: Cross multiply
    20,488.48x = 28,265.52 × 12,528.16
  4. Step 4: Simplify right side
    20,488.48x = 354,114,957.04
  5. Step 5: Solve for x
    x = 354,114,957.04/20,488.48
  6. Step 6: Final answer
    x = 17,283.61

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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.