Home / 13,908.79-20,862.98-3,378.89

Finding the Fourth Proportional to 13,908.79, 20,862.98 and 3,378.89

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Solution

The fourth proportional to 13,908.79, 20,862.98 and 3,378.89 is: 5,068.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.79 : 20,862.98 = 3,378.89 : x
  2. Step 2: Convert to fraction form
    13,908.79/20,862.98 = 3,378.89/x
  3. Step 3: Cross multiply
    13,908.79x = 20,862.98 × 3,378.89
  4. Step 4: Simplify right side
    13,908.79x = 70,493,714.49
  5. Step 5: Solve for x
    x = 70,493,714.49/13,908.79
  6. Step 6: Final answer
    x = 5,068.29

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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.