Home / 13,870.84-20,817.22-6,471.52

Finding the Fourth Proportional to 13,870.84, 20,817.22 and 6,471.52

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Solution

The fourth proportional to 13,870.84, 20,817.22 and 6,471.52 is: 9,712.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.84 : 20,817.22 = 6,471.52 : x
  2. Step 2: Convert to fraction form
    13,870.84/20,817.22 = 6,471.52/x
  3. Step 3: Cross multiply
    13,870.84x = 20,817.22 × 6,471.52
  4. Step 4: Simplify right side
    13,870.84x = 134,719,055.57
  5. Step 5: Solve for x
    x = 134,719,055.57/13,870.84
  6. Step 6: Final answer
    x = 9,712.39

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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.