Home / 15,531.66-21,433.80-8,458.08

Finding the Fourth Proportional to 15,531.66, 21,433.80 and 8,458.08

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Solution

The fourth proportional to 15,531.66, 21,433.80 and 8,458.08 is: 11,672.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,531.66 : 21,433.80 = 8,458.08 : x
  2. Step 2: Convert to fraction form
    15,531.66/21,433.80 = 8,458.08/x
  3. Step 3: Cross multiply
    15,531.66x = 21,433.80 × 8,458.08
  4. Step 4: Simplify right side
    15,531.66x = 181,288,795.10
  5. Step 5: Solve for x
    x = 181,288,795.10/15,531.66
  6. Step 6: Final answer
    x = 11,672.21

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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.