Home / 14,378.40-21,567.60-10,879.20

Finding the Fourth Proportional to 14,378.40, 21,567.60 and 10,879.20

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Solution

The fourth proportional to 14,378.40, 21,567.60 and 10,879.20 is: 16,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.40 : 21,567.60 = 10,879.20 : x
  2. Step 2: Convert to fraction form
    14,378.40/21,567.60 = 10,879.20/x
  3. Step 3: Cross multiply
    14,378.40x = 21,567.60 × 10,879.20
  4. Step 4: Simplify right side
    14,378.40x = 234,638,233.92
  5. Step 5: Solve for x
    x = 234,638,233.92/14,378.40
  6. Step 6: Final answer
    x = 16,318.80

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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.