Home / 43,479.90-65,244.15-18,515.70

Finding the Fourth Proportional to 43,479.90, 65,244.15 and 18,515.70

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Solution

The fourth proportional to 43,479.90, 65,244.15 and 18,515.70 is: 27,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,479.90 : 65,244.15 = 18,515.70 : x
  2. Step 2: Convert to fraction form
    43,479.90/65,244.15 = 18,515.70/x
  3. Step 3: Cross multiply
    43,479.90x = 65,244.15 × 18,515.70
  4. Step 4: Simplify right side
    43,479.90x = 1,208,041,108.16
  5. Step 5: Solve for x
    x = 1,208,041,108.16/43,479.90
  6. Step 6: Final answer
    x = 27,783.90

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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.