Home / 20,746.68-31,121.78-9,068.10

Finding the Fourth Proportional to 20,746.68, 31,121.78 and 9,068.10

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Solution

The fourth proportional to 20,746.68, 31,121.78 and 9,068.10 is: 13,602.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.68 : 31,121.78 = 9,068.10 : x
  2. Step 2: Convert to fraction form
    20,746.68/31,121.78 = 9,068.10/x
  3. Step 3: Cross multiply
    20,746.68x = 31,121.78 × 9,068.10
  4. Step 4: Simplify right side
    20,746.68x = 282,215,367.88
  5. Step 5: Solve for x
    x = 282,215,367.88/20,746.68
  6. Step 6: Final answer
    x = 13,602.92

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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.