Home / 14,228.40-21,358.80-8,388.30

Finding the Fourth Proportional to 14,228.40, 21,358.80 and 8,388.30

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Solution

The fourth proportional to 14,228.40, 21,358.80 and 8,388.30 is: 12,592.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,228.40 : 21,358.80 = 8,388.30 : x
  2. Step 2: Convert to fraction form
    14,228.40/21,358.80 = 8,388.30/x
  3. Step 3: Cross multiply
    14,228.40x = 21,358.80 × 8,388.30
  4. Step 4: Simplify right side
    14,228.40x = 179,164,022.04
  5. Step 5: Solve for x
    x = 179,164,022.04/14,228.40
  6. Step 6: Final answer
    x = 12,592.00

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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.