Home / 20,506.59-28,306.14-12,011.43

Finding the Fourth Proportional to 20,506.59, 28,306.14 and 12,011.43

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Solution

The fourth proportional to 20,506.59, 28,306.14 and 12,011.43 is: 16,579.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.59 : 28,306.14 = 12,011.43 : x
  2. Step 2: Convert to fraction form
    20,506.59/28,306.14 = 12,011.43/x
  3. Step 3: Cross multiply
    20,506.59x = 28,306.14 × 12,011.43
  4. Step 4: Simplify right side
    20,506.59x = 339,997,219.18
  5. Step 5: Solve for x
    x = 339,997,219.18/20,506.59
  6. Step 6: Final answer
    x = 16,579.90

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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.