Home / 14,258.40-21,403.80-8,418.30

Finding the Fourth Proportional to 14,258.40, 21,403.80 and 8,418.30

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Solution

The fourth proportional to 14,258.40, 21,403.80 and 8,418.30 is: 12,637.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,258.40 : 21,403.80 = 8,418.30 : x
  2. Step 2: Convert to fraction form
    14,258.40/21,403.80 = 8,418.30/x
  3. Step 3: Cross multiply
    14,258.40x = 21,403.80 × 8,418.30
  4. Step 4: Simplify right side
    14,258.40x = 180,183,609.54
  5. Step 5: Solve for x
    x = 180,183,609.54/14,258.40
  6. Step 6: Final answer
    x = 12,637.01

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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.