Home / 14,614.40-21,921.60-5,379.20

Finding the Fourth Proportional to 14,614.40, 21,921.60 and 5,379.20

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Solution

The fourth proportional to 14,614.40, 21,921.60 and 5,379.20 is: 8,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,614.40 : 21,921.60 = 5,379.20 : x
  2. Step 2: Convert to fraction form
    14,614.40/21,921.60 = 5,379.20/x
  3. Step 3: Cross multiply
    14,614.40x = 21,921.60 × 5,379.20
  4. Step 4: Simplify right side
    14,614.40x = 117,920,670.72
  5. Step 5: Solve for x
    x = 117,920,670.72/14,614.40
  6. Step 6: Final answer
    x = 8,068.80

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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.