Home / 28,318.12-39,081.04-16,988.12

Finding the Fourth Proportional to 28,318.12, 39,081.04 and 16,988.12

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Solution

The fourth proportional to 28,318.12, 39,081.04 and 16,988.12 is: 23,444.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.12 : 39,081.04 = 16,988.12 : x
  2. Step 2: Convert to fraction form
    28,318.12/39,081.04 = 16,988.12/x
  3. Step 3: Cross multiply
    28,318.12x = 39,081.04 × 16,988.12
  4. Step 4: Simplify right side
    28,318.12x = 663,913,397.24
  5. Step 5: Solve for x
    x = 663,913,397.24/28,318.12
  6. Step 6: Final answer
    x = 23,444.83

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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.