Home / 13,731.57-18,948.48-8,353.28

Finding the Fourth Proportional to 13,731.57, 18,948.48 and 8,353.28

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Solution

The fourth proportional to 13,731.57, 18,948.48 and 8,353.28 is: 11,526.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.57 : 18,948.48 = 8,353.28 : x
  2. Step 2: Convert to fraction form
    13,731.57/18,948.48 = 8,353.28/x
  3. Step 3: Cross multiply
    13,731.57x = 18,948.48 × 8,353.28
  4. Step 4: Simplify right side
    13,731.57x = 158,281,864.27
  5. Step 5: Solve for x
    x = 158,281,864.27/13,731.57
  6. Step 6: Final answer
    x = 11,526.86

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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.