Home / 20,337.95-28,051.90-18,664.76

Finding the Fourth Proportional to 20,337.95, 28,051.90 and 18,664.76

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Solution

The fourth proportional to 20,337.95, 28,051.90 and 18,664.76 is: 25,744.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.95 : 28,051.90 = 18,664.76 : x
  2. Step 2: Convert to fraction form
    20,337.95/28,051.90 = 18,664.76/x
  3. Step 3: Cross multiply
    20,337.95x = 28,051.90 × 18,664.76
  4. Step 4: Simplify right side
    20,337.95x = 523,581,794.12
  5. Step 5: Solve for x
    x = 523,581,794.12/20,337.95
  6. Step 6: Final answer
    x = 25,744.09

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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.