Home / 28,219.43-42,299.29-10,438.66

Finding the Fourth Proportional to 28,219.43, 42,299.29 and 10,438.66

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Solution

The fourth proportional to 28,219.43, 42,299.29 and 10,438.66 is: 15,646.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.43 : 42,299.29 = 10,438.66 : x
  2. Step 2: Convert to fraction form
    28,219.43/42,299.29 = 10,438.66/x
  3. Step 3: Cross multiply
    28,219.43x = 42,299.29 × 10,438.66
  4. Step 4: Simplify right side
    28,219.43x = 441,547,906.55
  5. Step 5: Solve for x
    x = 441,547,906.55/28,219.43
  6. Step 6: Final answer
    x = 15,646.95

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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.