Home / 18,264.78-25,205.40-9,881.28

Finding the Fourth Proportional to 18,264.78, 25,205.40 and 9,881.28

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Solution

The fourth proportional to 18,264.78, 25,205.40 and 9,881.28 is: 13,636.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,264.78 : 25,205.40 = 9,881.28 : x
  2. Step 2: Convert to fraction form
    18,264.78/25,205.40 = 9,881.28/x
  3. Step 3: Cross multiply
    18,264.78x = 25,205.40 × 9,881.28
  4. Step 4: Simplify right side
    18,264.78x = 249,061,614.91
  5. Step 5: Solve for x
    x = 249,061,614.91/18,264.78
  6. Step 6: Final answer
    x = 13,636.17

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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.