Home / 20,875.16-31,290.06-9,774.92

Finding the Fourth Proportional to 20,875.16, 31,290.06 and 9,774.92

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Solution

The fourth proportional to 20,875.16, 31,290.06 and 9,774.92 is: 14,651.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,875.16 : 31,290.06 = 9,774.92 : x
  2. Step 2: Convert to fraction form
    20,875.16/31,290.06 = 9,774.92/x
  3. Step 3: Cross multiply
    20,875.16x = 31,290.06 × 9,774.92
  4. Step 4: Simplify right side
    20,875.16x = 305,857,833.30
  5. Step 5: Solve for x
    x = 305,857,833.30/20,875.16
  6. Step 6: Final answer
    x = 14,651.76

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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.