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Finding the Fourth Proportional to 28,875.80, 39,841.80 and 16,298.12

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Solution

The fourth proportional to 28,875.80, 39,841.80 and 16,298.12 is: 22,487.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,875.80 : 39,841.80 = 16,298.12 : x
  2. Step 2: Convert to fraction form
    28,875.80/39,841.80 = 16,298.12/x
  3. Step 3: Cross multiply
    28,875.80x = 39,841.80 × 16,298.12
  4. Step 4: Simplify right side
    28,875.80x = 649,346,437.42
  5. Step 5: Solve for x
    x = 649,346,437.42/28,875.80
  6. Step 6: Final answer
    x = 22,487.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.