Home / 20,710.56-31,066.20-6,859.92

Finding the Fourth Proportional to 20,710.56, 31,066.20 and 6,859.92

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Solution

The fourth proportional to 20,710.56, 31,066.20 and 6,859.92 is: 10,290.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.56 : 31,066.20 = 6,859.92 : x
  2. Step 2: Convert to fraction form
    20,710.56/31,066.20 = 6,859.92/x
  3. Step 3: Cross multiply
    20,710.56x = 31,066.20 × 6,859.92
  4. Step 4: Simplify right side
    20,710.56x = 213,111,646.70
  5. Step 5: Solve for x
    x = 213,111,646.70/20,710.56
  6. Step 6: Final answer
    x = 10,290.00

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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.