Home / 15,397.21-21,248.16-8,323.63

Finding the Fourth Proportional to 15,397.21, 21,248.16 and 8,323.63

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Solution

The fourth proportional to 15,397.21, 21,248.16 and 8,323.63 is: 11,486.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.21 : 21,248.16 = 8,323.63 : x
  2. Step 2: Convert to fraction form
    15,397.21/21,248.16 = 8,323.63/x
  3. Step 3: Cross multiply
    15,397.21x = 21,248.16 × 8,323.63
  4. Step 4: Simplify right side
    15,397.21x = 176,861,822.02
  5. Step 5: Solve for x
    x = 176,861,822.02/15,397.21
  6. Step 6: Final answer
    x = 11,486.61

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Half scale
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Double scale
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Similar ratio
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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.