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Finding the Fourth Proportional to 28,079.91, 42,133.79 and 15,599.91

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Solution

The fourth proportional to 28,079.91, 42,133.79 and 15,599.91 is: 23,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.91 : 42,133.79 = 15,599.91 : x
  2. Step 2: Convert to fraction form
    28,079.91/42,133.79 = 15,599.91/x
  3. Step 3: Cross multiply
    28,079.91x = 42,133.79 × 15,599.91
  4. Step 4: Simplify right side
    28,079.91x = 657,283,253.96
  5. Step 5: Solve for x
    x = 657,283,253.96/28,079.91
  6. Step 6: Final answer
    x = 23,407.60

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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.