Home / 15,685.83-21,646.44-8,612.24

Finding the Fourth Proportional to 15,685.83, 21,646.44 and 8,612.24

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Solution

The fourth proportional to 15,685.83, 21,646.44 and 8,612.24 is: 11,884.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,685.83 : 21,646.44 = 8,612.24 : x
  2. Step 2: Convert to fraction form
    15,685.83/21,646.44 = 8,612.24/x
  3. Step 3: Cross multiply
    15,685.83x = 21,646.44 × 8,612.24
  4. Step 4: Simplify right side
    15,685.83x = 186,424,228.19
  5. Step 5: Solve for x
    x = 186,424,228.19/15,685.83
  6. Step 6: Final answer
    x = 11,884.88

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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.