Home / 15,294.96-21,106.32-8,488.56

Finding the Fourth Proportional to 15,294.96, 21,106.32 and 8,488.56

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Solution

The fourth proportional to 15,294.96, 21,106.32 and 8,488.56 is: 11,713.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,294.96 : 21,106.32 = 8,488.56 : x
  2. Step 2: Convert to fraction form
    15,294.96/21,106.32 = 8,488.56/x
  3. Step 3: Cross multiply
    15,294.96x = 21,106.32 × 8,488.56
  4. Step 4: Simplify right side
    15,294.96x = 179,162,263.70
  5. Step 5: Solve for x
    x = 179,162,263.70/15,294.96
  6. Step 6: Final answer
    x = 11,713.81

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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.