Home / 31,538.80-47,243.40-15,965.20

Finding the Fourth Proportional to 31,538.80, 47,243.40 and 15,965.20

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Solution

The fourth proportional to 31,538.80, 47,243.40 and 15,965.20 is: 23,915.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,538.80 : 47,243.40 = 15,965.20 : x
  2. Step 2: Convert to fraction form
    31,538.80/47,243.40 = 15,965.20/x
  3. Step 3: Cross multiply
    31,538.80x = 47,243.40 × 15,965.20
  4. Step 4: Simplify right side
    31,538.80x = 754,250,329.68
  5. Step 5: Solve for x
    x = 754,250,329.68/31,538.80
  6. Step 6: Final answer
    x = 23,915.00

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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.