Home / 15,488.30-21,374.56-8,774.22

Finding the Fourth Proportional to 15,488.30, 21,374.56 and 8,774.22

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Solution

The fourth proportional to 15,488.30, 21,374.56 and 8,774.22 is: 12,108.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,488.30 : 21,374.56 = 8,774.22 : x
  2. Step 2: Convert to fraction form
    15,488.30/21,374.56 = 8,774.22/x
  3. Step 3: Cross multiply
    15,488.30x = 21,374.56 × 8,774.22
  4. Step 4: Simplify right side
    15,488.30x = 187,545,091.84
  5. Step 5: Solve for x
    x = 187,545,091.84/15,488.30
  6. Step 6: Final answer
    x = 12,108.82

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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.