Home / 14,578.40-21,867.60-9,912.80

Finding the Fourth Proportional to 14,578.40, 21,867.60 and 9,912.80

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Solution

The fourth proportional to 14,578.40, 21,867.60 and 9,912.80 is: 14,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,578.40 : 21,867.60 = 9,912.80 : x
  2. Step 2: Convert to fraction form
    14,578.40/21,867.60 = 9,912.80/x
  3. Step 3: Cross multiply
    14,578.40x = 21,867.60 × 9,912.80
  4. Step 4: Simplify right side
    14,578.40x = 216,769,145.28
  5. Step 5: Solve for x
    x = 216,769,145.28/14,578.40
  6. Step 6: Final answer
    x = 14,869.20

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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.