Home / 15,488.79-21,374.58-8,775.66

Finding the Fourth Proportional to 15,488.79, 21,374.58 and 8,775.66

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Solution

The fourth proportional to 15,488.79, 21,374.58 and 8,775.66 is: 12,110.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,488.79 : 21,374.58 = 8,775.66 : x
  2. Step 2: Convert to fraction form
    15,488.79/21,374.58 = 8,775.66/x
  3. Step 3: Cross multiply
    15,488.79x = 21,374.58 × 8,775.66
  4. Step 4: Simplify right side
    15,488.79x = 187,576,046.72
  5. Step 5: Solve for x
    x = 187,576,046.72/15,488.79
  6. Step 6: Final answer
    x = 12,110.44

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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.