Home / 18,268.78-25,210.92-9,885.28

Finding the Fourth Proportional to 18,268.78, 25,210.92 and 9,885.28

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Solution

The fourth proportional to 18,268.78, 25,210.92 and 9,885.28 is: 13,641.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,268.78 : 25,210.92 = 9,885.28 : x
  2. Step 2: Convert to fraction form
    18,268.78/25,210.92 = 9,885.28/x
  3. Step 3: Cross multiply
    18,268.78x = 25,210.92 × 9,885.28
  4. Step 4: Simplify right side
    18,268.78x = 249,217,003.26
  5. Step 5: Solve for x
    x = 249,217,003.26/18,268.78
  6. Step 6: Final answer
    x = 13,641.69

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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.