Home / 31,289.12-43,178.74-16,948.64

Finding the Fourth Proportional to 31,289.12, 43,178.74 and 16,948.64

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Solution

The fourth proportional to 31,289.12, 43,178.74 and 16,948.64 is: 23,388.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,289.12 : 43,178.74 = 16,948.64 : x
  2. Step 2: Convert to fraction form
    31,289.12/43,178.74 = 16,948.64/x
  3. Step 3: Cross multiply
    31,289.12x = 43,178.74 × 16,948.64
  4. Step 4: Simplify right side
    31,289.12x = 731,820,919.91
  5. Step 5: Solve for x
    x = 731,820,919.91/31,289.12
  6. Step 6: Final answer
    x = 23,388.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.