Home / 43,102.80-64,654.08-13,520.76

Finding the Fourth Proportional to 43,102.80, 64,654.08 and 13,520.76

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Solution

The fourth proportional to 43,102.80, 64,654.08 and 13,520.76 is: 20,281.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,102.80 : 64,654.08 = 13,520.76 : x
  2. Step 2: Convert to fraction form
    43,102.80/64,654.08 = 13,520.76/x
  3. Step 3: Cross multiply
    43,102.80x = 64,654.08 × 13,520.76
  4. Step 4: Simplify right side
    43,102.80x = 874,172,298.70
  5. Step 5: Solve for x
    x = 874,172,298.70/43,102.80
  6. Step 6: Final answer
    x = 20,281.10

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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.