Home / 12,559.20-18,838.80-3,325.20

Finding the Fourth Proportional to 12,559.20, 18,838.80 and 3,325.20

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Solution

The fourth proportional to 12,559.20, 18,838.80 and 3,325.20 is: 4,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,559.20 : 18,838.80 = 3,325.20 : x
  2. Step 2: Convert to fraction form
    12,559.20/18,838.80 = 3,325.20/x
  3. Step 3: Cross multiply
    12,559.20x = 18,838.80 × 3,325.20
  4. Step 4: Simplify right side
    12,559.20x = 62,642,777.76
  5. Step 5: Solve for x
    x = 62,642,777.76/12,559.20
  6. Step 6: Final answer
    x = 4,987.80

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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.