Home / 20,866.92-31,278.51-9,764.25

Finding the Fourth Proportional to 20,866.92, 31,278.51 and 9,764.25

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Solution

The fourth proportional to 20,866.92, 31,278.51 and 9,764.25 is: 14,636.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.92 : 31,278.51 = 9,764.25 : x
  2. Step 2: Convert to fraction form
    20,866.92/31,278.51 = 9,764.25/x
  3. Step 3: Cross multiply
    20,866.92x = 31,278.51 × 9,764.25
  4. Step 4: Simplify right side
    20,866.92x = 305,411,191.27
  5. Step 5: Solve for x
    x = 305,411,191.27/20,866.92
  6. Step 6: Final answer
    x = 14,636.14

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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.