Home / 15,441.40-21,309.15-8,367.76

Finding the Fourth Proportional to 15,441.40, 21,309.15 and 8,367.76

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Solution

The fourth proportional to 15,441.40, 21,309.15 and 8,367.76 is: 11,547.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,441.40 : 21,309.15 = 8,367.76 : x
  2. Step 2: Convert to fraction form
    15,441.40/21,309.15 = 8,367.76/x
  3. Step 3: Cross multiply
    15,441.40x = 21,309.15 × 8,367.76
  4. Step 4: Simplify right side
    15,441.40x = 178,309,853.00
  5. Step 5: Solve for x
    x = 178,309,853.00/15,441.40
  6. Step 6: Final answer
    x = 11,547.52

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Half scale
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Double scale
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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.