Home / 13,701.38-18,985.21-13,395.20

Finding the Fourth Proportional to 13,701.38, 18,985.21 and 13,395.20

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Solution

The fourth proportional to 13,701.38, 18,985.21 and 13,395.20 is: 18,560.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.38 : 18,985.21 = 13,395.20 : x
  2. Step 2: Convert to fraction form
    13,701.38/18,985.21 = 13,395.20/x
  3. Step 3: Cross multiply
    13,701.38x = 18,985.21 × 13,395.20
  4. Step 4: Simplify right side
    13,701.38x = 254,310,618.02
  5. Step 5: Solve for x
    x = 254,310,618.02/13,701.38
  6. Step 6: Final answer
    x = 18,560.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.