Home / 13,559.76-20,342.88-6,985.44

Finding the Fourth Proportional to 13,559.76, 20,342.88 and 6,985.44

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Solution

The fourth proportional to 13,559.76, 20,342.88 and 6,985.44 is: 10,479.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,559.76 : 20,342.88 = 6,985.44 : x
  2. Step 2: Convert to fraction form
    13,559.76/20,342.88 = 6,985.44/x
  3. Step 3: Cross multiply
    13,559.76x = 20,342.88 × 6,985.44
  4. Step 4: Simplify right side
    13,559.76x = 142,103,967.67
  5. Step 5: Solve for x
    x = 142,103,967.67/13,559.76
  6. Step 6: Final answer
    x = 10,479.83

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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.