Home / 12,648.20-18,973.18-3,889.24

Finding the Fourth Proportional to 12,648.20, 18,973.18 and 3,889.24

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Solution

The fourth proportional to 12,648.20, 18,973.18 and 3,889.24 is: 5,834.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648.20 : 18,973.18 = 3,889.24 : x
  2. Step 2: Convert to fraction form
    12,648.20/18,973.18 = 3,889.24/x
  3. Step 3: Cross multiply
    12,648.20x = 18,973.18 × 3,889.24
  4. Step 4: Simplify right side
    12,648.20x = 73,791,250.58
  5. Step 5: Solve for x
    x = 73,791,250.58/12,648.20
  6. Step 6: Final answer
    x = 5,834.13

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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.