Home / 30,967.12-42,728.36-18,859.49

Finding the Fourth Proportional to 30,967.12, 42,728.36 and 18,859.49

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Solution

The fourth proportional to 30,967.12, 42,728.36 and 18,859.49 is: 26,022.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,967.12 : 42,728.36 = 18,859.49 : x
  2. Step 2: Convert to fraction form
    30,967.12/42,728.36 = 18,859.49/x
  3. Step 3: Cross multiply
    30,967.12x = 42,728.36 × 18,859.49
  4. Step 4: Simplify right side
    30,967.12x = 805,834,770.20
  5. Step 5: Solve for x
    x = 805,834,770.20/30,967.12
  6. Step 6: Final answer
    x = 26,022.27

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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.