Home / 14,258.85-21,388.28-3,870.60

Finding the Fourth Proportional to 14,258.85, 21,388.28 and 3,870.60

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Solution

The fourth proportional to 14,258.85, 21,388.28 and 3,870.60 is: 5,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,258.85 : 21,388.28 = 3,870.60 : x
  2. Step 2: Convert to fraction form
    14,258.85/21,388.28 = 3,870.60/x
  3. Step 3: Cross multiply
    14,258.85x = 21,388.28 × 3,870.60
  4. Step 4: Simplify right side
    14,258.85x = 82,785,457.22
  5. Step 5: Solve for x
    x = 82,785,457.22/14,258.85
  6. Step 6: Final answer
    x = 5,805.90

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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.