Home / 13,869.68-20,811.36-8,603.34

Finding the Fourth Proportional to 13,869.68, 20,811.36 and 8,603.34

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Solution

The fourth proportional to 13,869.68, 20,811.36 and 8,603.34 is: 12,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.68 : 20,811.36 = 8,603.34 : x
  2. Step 2: Convert to fraction form
    13,869.68/20,811.36 = 8,603.34/x
  3. Step 3: Cross multiply
    13,869.68x = 20,811.36 × 8,603.34
  4. Step 4: Simplify right side
    13,869.68x = 179,047,146.10
  5. Step 5: Solve for x
    x = 179,047,146.10/13,869.68
  6. Step 6: Final answer
    x = 12,909.25

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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.