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Finding the Fourth Proportional to 28,442.54, 42,632.02 and 10,656.09

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Solution

The fourth proportional to 28,442.54, 42,632.02 and 10,656.09 is: 15,972.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.54 : 42,632.02 = 10,656.09 : x
  2. Step 2: Convert to fraction form
    28,442.54/42,632.02 = 10,656.09/x
  3. Step 3: Cross multiply
    28,442.54x = 42,632.02 × 10,656.09
  4. Step 4: Simplify right side
    28,442.54x = 454,290,655.32
  5. Step 5: Solve for x
    x = 454,290,655.32/28,442.54
  6. Step 6: Final answer
    x = 15,972.22

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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.