Home / 32,687.12-45,089.45-20,729.90

Finding the Fourth Proportional to 32,687.12, 45,089.45 and 20,729.90

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Solution

The fourth proportional to 32,687.12, 45,089.45 and 20,729.90 is: 28,595.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,687.12 : 45,089.45 = 20,729.90 : x
  2. Step 2: Convert to fraction form
    32,687.12/45,089.45 = 20,729.90/x
  3. Step 3: Cross multiply
    32,687.12x = 45,089.45 × 20,729.90
  4. Step 4: Simplify right side
    32,687.12x = 934,699,460.46
  5. Step 5: Solve for x
    x = 934,699,460.46/32,687.12
  6. Step 6: Final answer
    x = 28,595.35

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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.