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Finding the Fourth Proportional to 28,397.70, 42,602.81 and 8,677.80

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Solution

The fourth proportional to 28,397.70, 42,602.81 and 8,677.80 is: 13,018.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,397.70 : 42,602.81 = 8,677.80 : x
  2. Step 2: Convert to fraction form
    28,397.70/42,602.81 = 8,677.80/x
  3. Step 3: Cross multiply
    28,397.70x = 42,602.81 × 8,677.80
  4. Step 4: Simplify right side
    28,397.70x = 369,698,621.23
  5. Step 5: Solve for x
    x = 369,698,621.23/28,397.70
  6. Step 6: Final answer
    x = 13,018.61

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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.