Home / 15,411.25-21,268.29-9,443.25

Finding the Fourth Proportional to 15,411.25, 21,268.29 and 9,443.25

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Solution

The fourth proportional to 15,411.25, 21,268.29 and 9,443.25 is: 13,032.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,411.25 : 21,268.29 = 9,443.25 : x
  2. Step 2: Convert to fraction form
    15,411.25/21,268.29 = 9,443.25/x
  3. Step 3: Cross multiply
    15,411.25x = 21,268.29 × 9,443.25
  4. Step 4: Simplify right side
    15,411.25x = 200,841,779.54
  5. Step 5: Solve for x
    x = 200,841,779.54/15,411.25
  6. Step 6: Final answer
    x = 13,032.15

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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.