Home / 30,645.12-42,290.19-17,907.06

Finding the Fourth Proportional to 30,645.12, 42,290.19 and 17,907.06

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Solution

The fourth proportional to 30,645.12, 42,290.19 and 17,907.06 is: 24,711.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,645.12 : 42,290.19 = 17,907.06 : x
  2. Step 2: Convert to fraction form
    30,645.12/42,290.19 = 17,907.06/x
  3. Step 3: Cross multiply
    30,645.12x = 42,290.19 × 17,907.06
  4. Step 4: Simplify right side
    30,645.12x = 757,292,969.74
  5. Step 5: Solve for x
    x = 757,292,969.74/30,645.12
  6. Step 6: Final answer
    x = 24,711.70

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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.