Home / 15,519.78-23,279.67-12,772.68

Finding the Fourth Proportional to 15,519.78, 23,279.67 and 12,772.68

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Solution

The fourth proportional to 15,519.78, 23,279.67 and 12,772.68 is: 19,159.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.78 : 23,279.67 = 12,772.68 : x
  2. Step 2: Convert to fraction form
    15,519.78/23,279.67 = 12,772.68/x
  3. Step 3: Cross multiply
    15,519.78x = 23,279.67 × 12,772.68
  4. Step 4: Simplify right side
    15,519.78x = 297,343,775.42
  5. Step 5: Solve for x
    x = 297,343,775.42/15,519.78
  6. Step 6: Final answer
    x = 19,159.02

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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.