Home / 13,616.88-20,432.16-6,220.68

Finding the Fourth Proportional to 13,616.88, 20,432.16 and 6,220.68

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Solution

The fourth proportional to 13,616.88, 20,432.16 and 6,220.68 is: 9,334.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616.88 : 20,432.16 = 6,220.68 : x
  2. Step 2: Convert to fraction form
    13,616.88/20,432.16 = 6,220.68/x
  3. Step 3: Cross multiply
    13,616.88x = 20,432.16 × 6,220.68
  4. Step 4: Simplify right side
    13,616.88x = 127,101,929.07
  5. Step 5: Solve for x
    x = 127,101,929.07/13,616.88
  6. Step 6: Final answer
    x = 9,334.14

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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.