Home / 15,518.31-21,414.63-8,444.76

Finding the Fourth Proportional to 15,518.31, 21,414.63 and 8,444.76

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Solution

The fourth proportional to 15,518.31, 21,414.63 and 8,444.76 is: 11,653.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.31 : 21,414.63 = 8,444.76 : x
  2. Step 2: Convert to fraction form
    15,518.31/21,414.63 = 8,444.76/x
  3. Step 3: Cross multiply
    15,518.31x = 21,414.63 × 8,444.76
  4. Step 4: Simplify right side
    15,518.31x = 180,841,410.84
  5. Step 5: Solve for x
    x = 180,841,410.84/15,518.31
  6. Step 6: Final answer
    x = 11,653.42

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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.