Home / 18,285.12-25,233.60-9,901.68

Finding the Fourth Proportional to 18,285.12, 25,233.60 and 9,901.68

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Solution

The fourth proportional to 18,285.12, 25,233.60 and 9,901.68 is: 13,664.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,285.12 : 25,233.60 = 9,901.68 : x
  2. Step 2: Convert to fraction form
    18,285.12/25,233.60 = 9,901.68/x
  3. Step 3: Cross multiply
    18,285.12x = 25,233.60 × 9,901.68
  4. Step 4: Simplify right side
    18,285.12x = 249,855,032.45
  5. Step 5: Solve for x
    x = 249,855,032.45/18,285.12
  6. Step 6: Final answer
    x = 13,664.39

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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.