Home / 15,150.98-20,908.80-8,345.24

Finding the Fourth Proportional to 15,150.98, 20,908.80 and 8,345.24

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Solution

The fourth proportional to 15,150.98, 20,908.80 and 8,345.24 is: 11,516.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.98 : 20,908.80 = 8,345.24 : x
  2. Step 2: Convert to fraction form
    15,150.98/20,908.80 = 8,345.24/x
  3. Step 3: Cross multiply
    15,150.98x = 20,908.80 × 8,345.24
  4. Step 4: Simplify right side
    15,150.98x = 174,488,954.11
  5. Step 5: Solve for x
    x = 174,488,954.11/15,150.98
  6. Step 6: Final answer
    x = 11,516.68

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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.