Home / 25,155.72-34,715.06-15,729.80

Finding the Fourth Proportional to 25,155.72, 34,715.06 and 15,729.80

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Solution

The fourth proportional to 25,155.72, 34,715.06 and 15,729.80 is: 21,707.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,155.72 : 34,715.06 = 15,729.80 : x
  2. Step 2: Convert to fraction form
    25,155.72/34,715.06 = 15,729.80/x
  3. Step 3: Cross multiply
    25,155.72x = 34,715.06 × 15,729.80
  4. Step 4: Simplify right side
    25,155.72x = 546,060,950.79
  5. Step 5: Solve for x
    x = 546,060,950.79/25,155.72
  6. Step 6: Final answer
    x = 21,707.23

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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.