Home / 13,868.12-20,809.38-10,602.20

Finding the Fourth Proportional to 13,868.12, 20,809.38 and 10,602.20

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Solution

The fourth proportional to 13,868.12, 20,809.38 and 10,602.20 is: 15,908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.12 : 20,809.38 = 10,602.20 : x
  2. Step 2: Convert to fraction form
    13,868.12/20,809.38 = 10,602.20/x
  3. Step 3: Cross multiply
    13,868.12x = 20,809.38 × 10,602.20
  4. Step 4: Simplify right side
    13,868.12x = 220,625,208.64
  5. Step 5: Solve for x
    x = 220,625,208.64/13,868.12
  6. Step 6: Final answer
    x = 15,908.80

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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.