Home / 15,571.31-21,488.56-8,497.85

Finding the Fourth Proportional to 15,571.31, 21,488.56 and 8,497.85

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Solution

The fourth proportional to 15,571.31, 21,488.56 and 8,497.85 is: 11,727.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,571.31 : 21,488.56 = 8,497.85 : x
  2. Step 2: Convert to fraction form
    15,571.31/21,488.56 = 8,497.85/x
  3. Step 3: Cross multiply
    15,571.31x = 21,488.56 × 8,497.85
  4. Step 4: Simplify right side
    15,571.31x = 182,606,430.91
  5. Step 5: Solve for x
    x = 182,606,430.91/15,571.31
  6. Step 6: Final answer
    x = 11,727.11

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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.