Home / 13,567.40-20,334.90-6,990.20

Finding the Fourth Proportional to 13,567.40, 20,334.90 and 6,990.20

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Solution

The fourth proportional to 13,567.40, 20,334.90 and 6,990.20 is: 10,476.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,567.40 : 20,334.90 = 6,990.20 : x
  2. Step 2: Convert to fraction form
    13,567.40/20,334.90 = 6,990.20/x
  3. Step 3: Cross multiply
    13,567.40x = 20,334.90 × 6,990.20
  4. Step 4: Simplify right side
    13,567.40x = 142,145,017.98
  5. Step 5: Solve for x
    x = 142,145,017.98/13,567.40
  6. Step 6: Final answer
    x = 10,476.95

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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.