Home / 38,123.20-57,184.80-10,421.20

Finding the Fourth Proportional to 38,123.20, 57,184.80 and 10,421.20

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Solution

The fourth proportional to 38,123.20, 57,184.80 and 10,421.20 is: 15,631.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,123.20 : 57,184.80 = 10,421.20 : x
  2. Step 2: Convert to fraction form
    38,123.20/57,184.80 = 10,421.20/x
  3. Step 3: Cross multiply
    38,123.20x = 57,184.80 × 10,421.20
  4. Step 4: Simplify right side
    38,123.20x = 595,934,237.76
  5. Step 5: Solve for x
    x = 595,934,237.76/38,123.20
  6. Step 6: Final answer
    x = 15,631.80

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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.