Home / 13,266.40-19,909.20-5,480.80

Finding the Fourth Proportional to 13,266.40, 19,909.20 and 5,480.80

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Solution

The fourth proportional to 13,266.40, 19,909.20 and 5,480.80 is: 8,225.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,266.40 : 19,909.20 = 5,480.80 : x
  2. Step 2: Convert to fraction form
    13,266.40/19,909.20 = 5,480.80/x
  3. Step 3: Cross multiply
    13,266.40x = 19,909.20 × 5,480.80
  4. Step 4: Simplify right side
    13,266.40x = 109,118,343.36
  5. Step 5: Solve for x
    x = 109,118,343.36/13,266.40
  6. Step 6: Final answer
    x = 8,225.17

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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.