Home / 15,449.67-21,316.97-10,423.22

Finding the Fourth Proportional to 15,449.67, 21,316.97 and 10,423.22

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Solution

The fourth proportional to 15,449.67, 21,316.97 and 10,423.22 is: 14,381.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.67 : 21,316.97 = 10,423.22 : x
  2. Step 2: Convert to fraction form
    15,449.67/21,316.97 = 10,423.22/x
  3. Step 3: Cross multiply
    15,449.67x = 21,316.97 × 10,423.22
  4. Step 4: Simplify right side
    15,449.67x = 222,191,387.52
  5. Step 5: Solve for x
    x = 222,191,387.52/15,449.67
  6. Step 6: Final answer
    x = 14,381.63

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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.