Home / 15,730.89-21,708.19-8,926.15

Finding the Fourth Proportional to 15,730.89, 21,708.19 and 8,926.15

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Solution

The fourth proportional to 15,730.89, 21,708.19 and 8,926.15 is: 12,317.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.89 : 21,708.19 = 8,926.15 : x
  2. Step 2: Convert to fraction form
    15,730.89/21,708.19 = 8,926.15/x
  3. Step 3: Cross multiply
    15,730.89x = 21,708.19 × 8,926.15
  4. Step 4: Simplify right side
    15,730.89x = 193,770,407.00
  5. Step 5: Solve for x
    x = 193,770,407.00/15,730.89
  6. Step 6: Final answer
    x = 12,317.83

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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.