Home / 13,443.08-20,152.87-6,419.57

Finding the Fourth Proportional to 13,443.08, 20,152.87 and 6,419.57

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Solution

The fourth proportional to 13,443.08, 20,152.87 and 6,419.57 is: 9,623.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,443.08 : 20,152.87 = 6,419.57 : x
  2. Step 2: Convert to fraction form
    13,443.08/20,152.87 = 6,419.57/x
  3. Step 3: Cross multiply
    13,443.08x = 20,152.87 × 6,419.57
  4. Step 4: Simplify right side
    13,443.08x = 129,372,642.85
  5. Step 5: Solve for x
    x = 129,372,642.85/13,443.08
  6. Step 6: Final answer
    x = 9,623.74

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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.