Home / 9,919.53-13,689.08-5,443.20

Finding the Fourth Proportional to 9,919.53, 13,689.08 and 5,443.20

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Solution

The fourth proportional to 9,919.53, 13,689.08 and 5,443.20 is: 7,511.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.53 : 13,689.08 = 5,443.20 : x
  2. Step 2: Convert to fraction form
    9,919.53/13,689.08 = 5,443.20/x
  3. Step 3: Cross multiply
    9,919.53x = 13,689.08 × 5,443.20
  4. Step 4: Simplify right side
    9,919.53x = 74,512,373.04
  5. Step 5: Solve for x
    x = 74,512,373.04/9,919.53
  6. Step 6: Final answer
    x = 7,511.68

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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.