Home / 15,397.79-21,248.93-8,324.21

Finding the Fourth Proportional to 15,397.79, 21,248.93 and 8,324.21

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Solution

The fourth proportional to 15,397.79, 21,248.93 and 8,324.21 is: 11,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,397.79 : 21,248.93 = 8,324.21 : x
  2. Step 2: Convert to fraction form
    15,397.79/21,248.93 = 8,324.21/x
  3. Step 3: Cross multiply
    15,397.79x = 21,248.93 × 8,324.21
  4. Step 4: Simplify right side
    15,397.79x = 176,880,555.60
  5. Step 5: Solve for x
    x = 176,880,555.60/15,397.79
  6. Step 6: Final answer
    x = 11,487.40

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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.