Home / 20,988.47-31,460.52-6,944.89

Finding the Fourth Proportional to 20,988.47, 31,460.52 and 6,944.89

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Solution

The fourth proportional to 20,988.47, 31,460.52 and 6,944.89 is: 10,409.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.47 : 31,460.52 = 6,944.89 : x
  2. Step 2: Convert to fraction form
    20,988.47/31,460.52 = 6,944.89/x
  3. Step 3: Cross multiply
    20,988.47x = 31,460.52 × 6,944.89
  4. Step 4: Simplify right side
    20,988.47x = 218,489,772.09
  5. Step 5: Solve for x
    x = 218,489,772.09/20,988.47
  6. Step 6: Final answer
    x = 10,409.99

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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.