Home / 20,660.74-30,922.29-15,702.66

Finding the Fourth Proportional to 20,660.74, 30,922.29 and 15,702.66

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Solution

The fourth proportional to 20,660.74, 30,922.29 and 15,702.66 is: 23,501.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,660.74 : 30,922.29 = 15,702.66 : x
  2. Step 2: Convert to fraction form
    20,660.74/30,922.29 = 15,702.66/x
  3. Step 3: Cross multiply
    20,660.74x = 30,922.29 × 15,702.66
  4. Step 4: Simplify right side
    20,660.74x = 485,562,206.29
  5. Step 5: Solve for x
    x = 485,562,206.29/20,660.74
  6. Step 6: Final answer
    x = 23,501.69

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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.