Home / 15,011.62-20,717.85-9,421.54

Finding the Fourth Proportional to 15,011.62, 20,717.85 and 9,421.54

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Solution

The fourth proportional to 15,011.62, 20,717.85 and 9,421.54 is: 13,002.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,011.62 : 20,717.85 = 9,421.54 : x
  2. Step 2: Convert to fraction form
    15,011.62/20,717.85 = 9,421.54/x
  3. Step 3: Cross multiply
    15,011.62x = 20,717.85 × 9,421.54
  4. Step 4: Simplify right side
    15,011.62x = 195,194,052.49
  5. Step 5: Solve for x
    x = 195,194,052.49/15,011.62
  6. Step 6: Final answer
    x = 13,002.86

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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.