Home / 15,913.29-21,968.55-11,218.53

Finding the Fourth Proportional to 15,913.29, 21,968.55 and 11,218.53

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Solution

The fourth proportional to 15,913.29, 21,968.55 and 11,218.53 is: 15,487.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,913.29 : 21,968.55 = 11,218.53 : x
  2. Step 2: Convert to fraction form
    15,913.29/21,968.55 = 11,218.53/x
  3. Step 3: Cross multiply
    15,913.29x = 21,968.55 × 11,218.53
  4. Step 4: Simplify right side
    15,913.29x = 246,454,837.23
  5. Step 5: Solve for x
    x = 246,454,837.23/15,913.29
  6. Step 6: Final answer
    x = 15,487.36

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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.