Home / 20,915.38-31,373.02-9,822.03

Finding the Fourth Proportional to 20,915.38, 31,373.02 and 9,822.03

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Solution

The fourth proportional to 20,915.38, 31,373.02 and 9,822.03 is: 14,733.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.38 : 31,373.02 = 9,822.03 : x
  2. Step 2: Convert to fraction form
    20,915.38/31,373.02 = 9,822.03/x
  3. Step 3: Cross multiply
    20,915.38x = 31,373.02 × 9,822.03
  4. Step 4: Simplify right side
    20,915.38x = 308,146,638.26
  5. Step 5: Solve for x
    x = 308,146,638.26/20,915.38
  6. Step 6: Final answer
    x = 14,733.02

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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.