Home / 13,987.02-20,974.05-5,219.58

Finding the Fourth Proportional to 13,987.02, 20,974.05 and 5,219.58

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Solution

The fourth proportional to 13,987.02, 20,974.05 and 5,219.58 is: 7,826.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.02 : 20,974.05 = 5,219.58 : x
  2. Step 2: Convert to fraction form
    13,987.02/20,974.05 = 5,219.58/x
  3. Step 3: Cross multiply
    13,987.02x = 20,974.05 × 5,219.58
  4. Step 4: Simplify right side
    13,987.02x = 109,475,731.90
  5. Step 5: Solve for x
    x = 109,475,731.90/13,987.02
  6. Step 6: Final answer
    x = 7,826.95

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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.