Home / 15,358.72-21,195.12-8,734.72

Finding the Fourth Proportional to 15,358.72, 21,195.12 and 8,734.72

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Solution

The fourth proportional to 15,358.72, 21,195.12 and 8,734.72 is: 12,053.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.72 : 21,195.12 = 8,734.72 : x
  2. Step 2: Convert to fraction form
    15,358.72/21,195.12 = 8,734.72/x
  3. Step 3: Cross multiply
    15,358.72x = 21,195.12 × 8,734.72
  4. Step 4: Simplify right side
    15,358.72x = 185,133,438.57
  5. Step 5: Solve for x
    x = 185,133,438.57/15,358.72
  6. Step 6: Final answer
    x = 12,053.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.