Home / 16,812.68-25,218.95-5,125.86

Finding the Fourth Proportional to 16,812.68, 25,218.95 and 5,125.86

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Solution

The fourth proportional to 16,812.68, 25,218.95 and 5,125.86 is: 7,688.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,812.68 : 25,218.95 = 5,125.86 : x
  2. Step 2: Convert to fraction form
    16,812.68/25,218.95 = 5,125.86/x
  3. Step 3: Cross multiply
    16,812.68x = 25,218.95 × 5,125.86
  4. Step 4: Simplify right side
    16,812.68x = 129,268,781.42
  5. Step 5: Solve for x
    x = 129,268,781.42/16,812.68
  6. Step 6: Final answer
    x = 7,688.77

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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.