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Finding the Fourth Proportional to 28,659.01, 42,990.39 and 7,598.74

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Solution

The fourth proportional to 28,659.01, 42,990.39 and 7,598.74 is: 11,398.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,659.01 : 42,990.39 = 7,598.74 : x
  2. Step 2: Convert to fraction form
    28,659.01/42,990.39 = 7,598.74/x
  3. Step 3: Cross multiply
    28,659.01x = 42,990.39 × 7,598.74
  4. Step 4: Simplify right side
    28,659.01x = 326,672,796.11
  5. Step 5: Solve for x
    x = 326,672,796.11/28,659.01
  6. Step 6: Final answer
    x = 11,398.61

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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.