Home / 9,899.28-13,660.92-5,423.02

Finding the Fourth Proportional to 9,899.28, 13,660.92 and 5,423.02

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Solution

The fourth proportional to 9,899.28, 13,660.92 and 5,423.02 is: 7,483.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,899.28 : 13,660.92 = 5,423.02 : x
  2. Step 2: Convert to fraction form
    9,899.28/13,660.92 = 5,423.02/x
  3. Step 3: Cross multiply
    9,899.28x = 13,660.92 × 5,423.02
  4. Step 4: Simplify right side
    9,899.28x = 74,083,408.23
  5. Step 5: Solve for x
    x = 74,083,408.23/9,899.28
  6. Step 6: Final answer
    x = 7,483.72

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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.