Home / 13,513.72-20,266.80-5,717.20

Finding the Fourth Proportional to 13,513.72, 20,266.80 and 5,717.20

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Solution

The fourth proportional to 13,513.72, 20,266.80 and 5,717.20 is: 8,574.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.72 : 20,266.80 = 5,717.20 : x
  2. Step 2: Convert to fraction form
    13,513.72/20,266.80 = 5,717.20/x
  3. Step 3: Cross multiply
    13,513.72x = 20,266.80 × 5,717.20
  4. Step 4: Simplify right side
    13,513.72x = 115,869,348.96
  5. Step 5: Solve for x
    x = 115,869,348.96/13,513.72
  6. Step 6: Final answer
    x = 8,574.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.