Home / 15,478.26-21,359.40-8,404.53

Finding the Fourth Proportional to 15,478.26, 21,359.40 and 8,404.53

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Solution

The fourth proportional to 15,478.26, 21,359.40 and 8,404.53 is: 11,597.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.26 : 21,359.40 = 8,404.53 : x
  2. Step 2: Convert to fraction form
    15,478.26/21,359.40 = 8,404.53/x
  3. Step 3: Cross multiply
    15,478.26x = 21,359.40 × 8,404.53
  4. Step 4: Simplify right side
    15,478.26x = 179,515,718.08
  5. Step 5: Solve for x
    x = 179,515,718.08/15,478.26
  6. Step 6: Final answer
    x = 11,597.93

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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.