Home / 18,272.42-25,215.89-9,888.92

Finding the Fourth Proportional to 18,272.42, 25,215.89 and 9,888.92

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Solution

The fourth proportional to 18,272.42, 25,215.89 and 9,888.92 is: 13,646.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.42 : 25,215.89 = 9,888.92 : x
  2. Step 2: Convert to fraction form
    18,272.42/25,215.89 = 9,888.92/x
  3. Step 3: Cross multiply
    18,272.42x = 25,215.89 × 9,888.92
  4. Step 4: Simplify right side
    18,272.42x = 249,357,918.94
  5. Step 5: Solve for x
    x = 249,357,918.94/18,272.42
  6. Step 6: Final answer
    x = 13,646.68

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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.