Home / 25,711.80-35,480.31-15,638.85

Finding the Fourth Proportional to 25,711.80, 35,480.31 and 15,638.85

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Solution

The fourth proportional to 25,711.80, 35,480.31 and 15,638.85 is: 21,580.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,711.80 : 35,480.31 = 15,638.85 : x
  2. Step 2: Convert to fraction form
    25,711.80/35,480.31 = 15,638.85/x
  3. Step 3: Cross multiply
    25,711.80x = 35,480.31 × 15,638.85
  4. Step 4: Simplify right side
    25,711.80x = 554,871,246.04
  5. Step 5: Solve for x
    x = 554,871,246.04/25,711.80
  6. Step 6: Final answer
    x = 21,580.41

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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.