Home / 30,810.80-42,520.87-17,377.15

Finding the Fourth Proportional to 30,810.80, 42,520.87 and 17,377.15

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Solution

The fourth proportional to 30,810.80, 42,520.87 and 17,377.15 is: 23,981.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.80 : 42,520.87 = 17,377.15 : x
  2. Step 2: Convert to fraction form
    30,810.80/42,520.87 = 17,377.15/x
  3. Step 3: Cross multiply
    30,810.80x = 42,520.87 × 17,377.15
  4. Step 4: Simplify right side
    30,810.80x = 738,891,536.12
  5. Step 5: Solve for x
    x = 738,891,536.12/30,810.80
  6. Step 6: Final answer
    x = 23,981.58

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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.