Home / 30,515.14-42,113.42-17,087.65

Finding the Fourth Proportional to 30,515.14, 42,113.42 and 17,087.65

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Solution

The fourth proportional to 30,515.14, 42,113.42 and 17,087.65 is: 23,582.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,515.14 : 42,113.42 = 17,087.65 : x
  2. Step 2: Convert to fraction form
    30,515.14/42,113.42 = 17,087.65/x
  3. Step 3: Cross multiply
    30,515.14x = 42,113.42 × 17,087.65
  4. Step 4: Simplify right side
    30,515.14x = 719,619,195.40
  5. Step 5: Solve for x
    x = 719,619,195.40/30,515.14
  6. Step 6: Final answer
    x = 23,582.36

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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.