Home / 15,131.16-22,717.80-7,740.72

Finding the Fourth Proportional to 15,131.16, 22,717.80 and 7,740.72

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Solution

The fourth proportional to 15,131.16, 22,717.80 and 7,740.72 is: 11,621.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.16 : 22,717.80 = 7,740.72 : x
  2. Step 2: Convert to fraction form
    15,131.16/22,717.80 = 7,740.72/x
  3. Step 3: Cross multiply
    15,131.16x = 22,717.80 × 7,740.72
  4. Step 4: Simplify right side
    15,131.16x = 175,852,128.82
  5. Step 5: Solve for x
    x = 175,852,128.82/15,131.16
  6. Step 6: Final answer
    x = 11,621.85

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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.