Home / 15,538.43-21,443.02-8,464.85

Finding the Fourth Proportional to 15,538.43, 21,443.02 and 8,464.85

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Solution

The fourth proportional to 15,538.43, 21,443.02 and 8,464.85 is: 11,681.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.43 : 21,443.02 = 8,464.85 : x
  2. Step 2: Convert to fraction form
    15,538.43/21,443.02 = 8,464.85/x
  3. Step 3: Cross multiply
    15,538.43x = 21,443.02 × 8,464.85
  4. Step 4: Simplify right side
    15,538.43x = 181,511,947.85
  5. Step 5: Solve for x
    x = 181,511,947.85/15,538.43
  6. Step 6: Final answer
    x = 11,681.49

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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.