Home / 13,869.84-20,817.12-6,478.46

Finding the Fourth Proportional to 13,869.84, 20,817.12 and 6,478.46

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Solution

The fourth proportional to 13,869.84, 20,817.12 and 6,478.46 is: 9,723.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.84 : 20,817.12 = 6,478.46 : x
  2. Step 2: Convert to fraction form
    13,869.84/20,817.12 = 6,478.46/x
  3. Step 3: Cross multiply
    13,869.84x = 20,817.12 × 6,478.46
  4. Step 4: Simplify right side
    13,869.84x = 134,862,879.24
  5. Step 5: Solve for x
    x = 134,862,879.24/13,869.84
  6. Step 6: Final answer
    x = 9,723.46

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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.