Home / 15,005.68-20,707.32-8,717.20

Finding the Fourth Proportional to 15,005.68, 20,707.32 and 8,717.20

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Solution

The fourth proportional to 15,005.68, 20,707.32 and 8,717.20 is: 12,029.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,005.68 : 20,707.32 = 8,717.20 : x
  2. Step 2: Convert to fraction form
    15,005.68/20,707.32 = 8,717.20/x
  3. Step 3: Cross multiply
    15,005.68x = 20,707.32 × 8,717.20
  4. Step 4: Simplify right side
    15,005.68x = 180,509,849.90
  5. Step 5: Solve for x
    x = 180,509,849.90/15,005.68
  6. Step 6: Final answer
    x = 12,029.43

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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.