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Finding the Fourth Proportional to 28,377.44, 42,572.32 and 8,655.48

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Solution

The fourth proportional to 28,377.44, 42,572.32 and 8,655.48 is: 12,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.44 : 42,572.32 = 8,655.48 : x
  2. Step 2: Convert to fraction form
    28,377.44/42,572.32 = 8,655.48/x
  3. Step 3: Cross multiply
    28,377.44x = 42,572.32 × 8,655.48
  4. Step 4: Simplify right side
    28,377.44x = 368,483,864.31
  5. Step 5: Solve for x
    x = 368,483,864.31/28,377.44
  6. Step 6: Final answer
    x = 12,985.10

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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.