Home / 20,904.01-31,355.68-8,423.74

Finding the Fourth Proportional to 20,904.01, 31,355.68 and 8,423.74

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Solution

The fourth proportional to 20,904.01, 31,355.68 and 8,423.74 is: 12,635.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.01 : 31,355.68 = 8,423.74 : x
  2. Step 2: Convert to fraction form
    20,904.01/31,355.68 = 8,423.74/x
  3. Step 3: Cross multiply
    20,904.01x = 31,355.68 × 8,423.74
  4. Step 4: Simplify right side
    20,904.01x = 264,132,095.84
  5. Step 5: Solve for x
    x = 264,132,095.84/20,904.01
  6. Step 6: Final answer
    x = 12,635.48

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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.