Home / 15,540.93-21,454.02-9,880.02

Finding the Fourth Proportional to 15,540.93, 21,454.02 and 9,880.02

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Solution

The fourth proportional to 15,540.93, 21,454.02 and 9,880.02 is: 13,639.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540.93 : 21,454.02 = 9,880.02 : x
  2. Step 2: Convert to fraction form
    15,540.93/21,454.02 = 9,880.02/x
  3. Step 3: Cross multiply
    15,540.93x = 21,454.02 × 9,880.02
  4. Step 4: Simplify right side
    15,540.93x = 211,966,146.68
  5. Step 5: Solve for x
    x = 211,966,146.68/15,540.93
  6. Step 6: Final answer
    x = 13,639.22

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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.