Home / 25,421.28-38,140.11-21,304.25

Finding the Fourth Proportional to 25,421.28, 38,140.11 and 21,304.25

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Solution

The fourth proportional to 25,421.28, 38,140.11 and 21,304.25 is: 31,963.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,421.28 : 38,140.11 = 21,304.25 : x
  2. Step 2: Convert to fraction form
    25,421.28/38,140.11 = 21,304.25/x
  3. Step 3: Cross multiply
    25,421.28x = 38,140.11 × 21,304.25
  4. Step 4: Simplify right side
    25,421.28x = 812,546,247.77
  5. Step 5: Solve for x
    x = 812,546,247.77/25,421.28
  6. Step 6: Final answer
    x = 31,963.23

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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.