Home / 15,010.76-20,710.32-8,721.92

Finding the Fourth Proportional to 15,010.76, 20,710.32 and 8,721.92

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Solution

The fourth proportional to 15,010.76, 20,710.32 and 8,721.92 is: 12,033.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,010.76 : 20,710.32 = 8,721.92 : x
  2. Step 2: Convert to fraction form
    15,010.76/20,710.32 = 8,721.92/x
  3. Step 3: Cross multiply
    15,010.76x = 20,710.32 × 8,721.92
  4. Step 4: Simplify right side
    15,010.76x = 180,633,754.21
  5. Step 5: Solve for x
    x = 180,633,754.21/15,010.76
  6. Step 6: Final answer
    x = 12,033.62

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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.