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Finding the Fourth Proportional to 18,355.47, 25,330.01 and 10,398.39

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Solution

The fourth proportional to 18,355.47, 25,330.01 and 10,398.39 is: 14,349.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.47 : 25,330.01 = 10,398.39 : x
  2. Step 2: Convert to fraction form
    18,355.47/25,330.01 = 10,398.39/x
  3. Step 3: Cross multiply
    18,355.47x = 25,330.01 × 10,398.39
  4. Step 4: Simplify right side
    18,355.47x = 263,391,322.68
  5. Step 5: Solve for x
    x = 263,391,322.68/18,355.47
  6. Step 6: Final answer
    x = 14,349.47

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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.