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Finding the Fourth Proportional to 18,308.99, 25,266.39 and 9,925.49

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Solution

The fourth proportional to 18,308.99, 25,266.39 and 9,925.49 is: 13,697.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,308.99 : 25,266.39 = 9,925.49 : x
  2. Step 2: Convert to fraction form
    18,308.99/25,266.39 = 9,925.49/x
  3. Step 3: Cross multiply
    18,308.99x = 25,266.39 × 9,925.49
  4. Step 4: Simplify right side
    18,308.99x = 250,781,301.28
  5. Step 5: Solve for x
    x = 250,781,301.28/18,308.99
  6. Step 6: Final answer
    x = 13,697.17

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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.