Home / 8,999.22-12,419.79-5,020.70

Finding the Fourth Proportional to 8,999.22, 12,419.79 and 5,020.70

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Solution

The fourth proportional to 8,999.22, 12,419.79 and 5,020.70 is: 6,929.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,999.22 : 12,419.79 = 5,020.70 : x
  2. Step 2: Convert to fraction form
    8,999.22/12,419.79 = 5,020.70/x
  3. Step 3: Cross multiply
    8,999.22x = 12,419.79 × 5,020.70
  4. Step 4: Simplify right side
    8,999.22x = 62,356,070.70
  5. Step 5: Solve for x
    x = 62,356,070.70/8,999.22
  6. Step 6: Final answer
    x = 6,929.05

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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.