Home / 42,930.60-64,400.70-13,348.20

Finding the Fourth Proportional to 42,930.60, 64,400.70 and 13,348.20

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Solution

The fourth proportional to 42,930.60, 64,400.70 and 13,348.20 is: 20,023.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,930.60 : 64,400.70 = 13,348.20 : x
  2. Step 2: Convert to fraction form
    42,930.60/64,400.70 = 13,348.20/x
  3. Step 3: Cross multiply
    42,930.60x = 64,400.70 × 13,348.20
  4. Step 4: Simplify right side
    42,930.60x = 859,633,423.74
  5. Step 5: Solve for x
    x = 859,633,423.74/42,930.60
  6. Step 6: Final answer
    x = 20,023.79

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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.