Home / 15,488.67-21,374.81-8,774.30

Finding the Fourth Proportional to 15,488.67, 21,374.81 and 8,774.30

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Solution

The fourth proportional to 15,488.67, 21,374.81 and 8,774.30 is: 12,108.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,488.67 : 21,374.81 = 8,774.30 : x
  2. Step 2: Convert to fraction form
    15,488.67/21,374.81 = 8,774.30/x
  3. Step 3: Cross multiply
    15,488.67x = 21,374.81 × 8,774.30
  4. Step 4: Simplify right side
    15,488.67x = 187,548,995.38
  5. Step 5: Solve for x
    x = 187,548,995.38/15,488.67
  6. Step 6: Final answer
    x = 12,108.79

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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.