Home / 10,981.26-15,161.06-8,458.63

Finding the Fourth Proportional to 10,981.26, 15,161.06 and 8,458.63

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Solution

The fourth proportional to 10,981.26, 15,161.06 and 8,458.63 is: 11,678.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.26 : 15,161.06 = 8,458.63 : x
  2. Step 2: Convert to fraction form
    10,981.26/15,161.06 = 8,458.63/x
  3. Step 3: Cross multiply
    10,981.26x = 15,161.06 × 8,458.63
  4. Step 4: Simplify right side
    10,981.26x = 128,241,780.19
  5. Step 5: Solve for x
    x = 128,241,780.19/10,981.26
  6. Step 6: Final answer
    x = 11,678.24

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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.