Home / 13,869.12-20,810.88-10,603.20

Finding the Fourth Proportional to 13,869.12, 20,810.88 and 10,603.20

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Solution

The fourth proportional to 13,869.12, 20,810.88 and 10,603.20 is: 15,910.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.12 : 20,810.88 = 10,603.20 : x
  2. Step 2: Convert to fraction form
    13,869.12/20,810.88 = 10,603.20/x
  3. Step 3: Cross multiply
    13,869.12x = 20,810.88 × 10,603.20
  4. Step 4: Simplify right side
    13,869.12x = 220,661,922.82
  5. Step 5: Solve for x
    x = 220,661,922.82/13,869.12
  6. Step 6: Final answer
    x = 15,910.30

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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.