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Finding the Fourth Proportional to 15,935.20, 23,902.80 and 15,330.40

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Solution

The fourth proportional to 15,935.20, 23,902.80 and 15,330.40 is: 22,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,935.20 : 23,902.80 = 15,330.40 : x
  2. Step 2: Convert to fraction form
    15,935.20/23,902.80 = 15,330.40/x
  3. Step 3: Cross multiply
    15,935.20x = 23,902.80 × 15,330.40
  4. Step 4: Simplify right side
    15,935.20x = 366,439,485.12
  5. Step 5: Solve for x
    x = 366,439,485.12/15,935.20
  6. Step 6: Final answer
    x = 22,995.60

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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.