Home / 13,390.84-20,060.34-6,470.20

Finding the Fourth Proportional to 13,390.84, 20,060.34 and 6,470.20

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Solution

The fourth proportional to 13,390.84, 20,060.34 and 6,470.20 is: 9,692.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.84 : 20,060.34 = 6,470.20 : x
  2. Step 2: Convert to fraction form
    13,390.84/20,060.34 = 6,470.20/x
  3. Step 3: Cross multiply
    13,390.84x = 20,060.34 × 6,470.20
  4. Step 4: Simplify right side
    13,390.84x = 129,794,411.87
  5. Step 5: Solve for x
    x = 129,794,411.87/13,390.84
  6. Step 6: Final answer
    x = 9,692.78

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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.