Home / 18,886.68-28,331.10-7,214.04

Finding the Fourth Proportional to 18,886.68, 28,331.10 and 7,214.04

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Solution

The fourth proportional to 18,886.68, 28,331.10 and 7,214.04 is: 10,821.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,886.68 : 28,331.10 = 7,214.04 : x
  2. Step 2: Convert to fraction form
    18,886.68/28,331.10 = 7,214.04/x
  3. Step 3: Cross multiply
    18,886.68x = 28,331.10 × 7,214.04
  4. Step 4: Simplify right side
    18,886.68x = 204,381,688.64
  5. Step 5: Solve for x
    x = 204,381,688.64/18,886.68
  6. Step 6: Final answer
    x = 10,821.47

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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.