Home / 20,708.92-31,070.40-9,029.80

Finding the Fourth Proportional to 20,708.92, 31,070.40 and 9,029.80

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Solution

The fourth proportional to 20,708.92, 31,070.40 and 9,029.80 is: 13,547.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.92 : 31,070.40 = 9,029.80 : x
  2. Step 2: Convert to fraction form
    20,708.92/31,070.40 = 9,029.80/x
  3. Step 3: Cross multiply
    20,708.92x = 31,070.40 × 9,029.80
  4. Step 4: Simplify right side
    20,708.92x = 280,559,497.92
  5. Step 5: Solve for x
    x = 280,559,497.92/20,708.92
  6. Step 6: Final answer
    x = 13,547.76

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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.