Home / 14,542.08-21,778.80-7,123.20

Finding the Fourth Proportional to 14,542.08, 21,778.80 and 7,123.20

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Solution

The fourth proportional to 14,542.08, 21,778.80 and 7,123.20 is: 10,667.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,542.08 : 21,778.80 = 7,123.20 : x
  2. Step 2: Convert to fraction form
    14,542.08/21,778.80 = 7,123.20/x
  3. Step 3: Cross multiply
    14,542.08x = 21,778.80 × 7,123.20
  4. Step 4: Simplify right side
    14,542.08x = 155,134,748.16
  5. Step 5: Solve for x
    x = 155,134,748.16/14,542.08
  6. Step 6: Final answer
    x = 10,667.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.