Home / 20,952.19-31,421.60-6,909.59

Finding the Fourth Proportional to 20,952.19, 31,421.60 and 6,909.59

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Solution

The fourth proportional to 20,952.19, 31,421.60 and 6,909.59 is: 10,362.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,952.19 : 31,421.60 = 6,909.59 : x
  2. Step 2: Convert to fraction form
    20,952.19/31,421.60 = 6,909.59/x
  3. Step 3: Cross multiply
    20,952.19x = 31,421.60 × 6,909.59
  4. Step 4: Simplify right side
    20,952.19x = 217,110,305.18
  5. Step 5: Solve for x
    x = 217,110,305.18/20,952.19
  6. Step 6: Final answer
    x = 10,362.18

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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.