Home / 25,644.40-38,434.20-18,710.80

Finding the Fourth Proportional to 25,644.40, 38,434.20 and 18,710.80

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Solution

The fourth proportional to 25,644.40, 38,434.20 and 18,710.80 is: 28,042.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,644.40 : 38,434.20 = 18,710.80 : x
  2. Step 2: Convert to fraction form
    25,644.40/38,434.20 = 18,710.80/x
  3. Step 3: Cross multiply
    25,644.40x = 38,434.20 × 18,710.80
  4. Step 4: Simplify right side
    25,644.40x = 719,134,629.36
  5. Step 5: Solve for x
    x = 719,134,629.36/25,644.40
  6. Step 6: Final answer
    x = 28,042.56

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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.