Home / 30,807.38-42,514.26-17,378.12

Finding the Fourth Proportional to 30,807.38, 42,514.26 and 17,378.12

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Solution

The fourth proportional to 30,807.38, 42,514.26 and 17,378.12 is: 23,981.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,807.38 : 42,514.26 = 17,378.12 : x
  2. Step 2: Convert to fraction form
    30,807.38/42,514.26 = 17,378.12/x
  3. Step 3: Cross multiply
    30,807.38x = 42,514.26 × 17,378.12
  4. Step 4: Simplify right side
    30,807.38x = 738,817,911.99
  5. Step 5: Solve for x
    x = 738,817,911.99/30,807.38
  6. Step 6: Final answer
    x = 23,981.85

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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.