Home / 19,531.04-26,952.16-11,147.20

Finding the Fourth Proportional to 19,531.04, 26,952.16 and 11,147.20

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Solution

The fourth proportional to 19,531.04, 26,952.16 and 11,147.20 is: 15,382.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,531.04 : 26,952.16 = 11,147.20 : x
  2. Step 2: Convert to fraction form
    19,531.04/26,952.16 = 11,147.20/x
  3. Step 3: Cross multiply
    19,531.04x = 26,952.16 × 11,147.20
  4. Step 4: Simplify right side
    19,531.04x = 300,441,117.95
  5. Step 5: Solve for x
    x = 300,441,117.95/19,531.04
  6. Step 6: Final answer
    x = 15,382.75

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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.