Home / 25,145.60-37,715.76-12,660.56

Finding the Fourth Proportional to 25,145.60, 37,715.76 and 12,660.56

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Solution

The fourth proportional to 25,145.60, 37,715.76 and 12,660.56 is: 18,989.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,145.60 : 37,715.76 = 12,660.56 : x
  2. Step 2: Convert to fraction form
    25,145.60/37,715.76 = 12,660.56/x
  3. Step 3: Cross multiply
    25,145.60x = 37,715.76 × 12,660.56
  4. Step 4: Simplify right side
    25,145.60x = 477,502,642.43
  5. Step 5: Solve for x
    x = 477,502,642.43/25,145.60
  6. Step 6: Final answer
    x = 18,989.51

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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.