Home / 20,962.26-31,423.95-10,425.78

Finding the Fourth Proportional to 20,962.26, 31,423.95 and 10,425.78

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Solution

The fourth proportional to 20,962.26, 31,423.95 and 10,425.78 is: 15,629.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.26 : 31,423.95 = 10,425.78 : x
  2. Step 2: Convert to fraction form
    20,962.26/31,423.95 = 10,425.78/x
  3. Step 3: Cross multiply
    20,962.26x = 31,423.95 × 10,425.78
  4. Step 4: Simplify right side
    20,962.26x = 327,619,189.43
  5. Step 5: Solve for x
    x = 327,619,189.43/20,962.26
  6. Step 6: Final answer
    x = 15,629.00

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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.