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Finding the Fourth Proportional to 15,294.96, 21,098.10 and 9,620.76

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Solution

The fourth proportional to 15,294.96, 21,098.10 and 9,620.76 is: 13,271.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,294.96 : 21,098.10 = 9,620.76 : x
  2. Step 2: Convert to fraction form
    15,294.96/21,098.10 = 9,620.76/x
  3. Step 3: Cross multiply
    15,294.96x = 21,098.10 × 9,620.76
  4. Step 4: Simplify right side
    15,294.96x = 202,979,756.56
  5. Step 5: Solve for x
    x = 202,979,756.56/15,294.96
  6. Step 6: Final answer
    x = 13,271.02

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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.