Home / 14,258.80-21,388.28-3,870.56

Finding the Fourth Proportional to 14,258.80, 21,388.28 and 3,870.56

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Solution

The fourth proportional to 14,258.80, 21,388.28 and 3,870.56 is: 5,805.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,258.80 : 21,388.28 = 3,870.56 : x
  2. Step 2: Convert to fraction form
    14,258.80/21,388.28 = 3,870.56/x
  3. Step 3: Cross multiply
    14,258.80x = 21,388.28 × 3,870.56
  4. Step 4: Simplify right side
    14,258.80x = 82,784,621.04
  5. Step 5: Solve for x
    x = 82,784,621.04/14,258.80
  6. Step 6: Final answer
    x = 5,805.86

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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.