Home / 30,655.84-42,310.64-18,081.12

Finding the Fourth Proportional to 30,655.84, 42,310.64 and 18,081.12

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Solution

The fourth proportional to 30,655.84, 42,310.64 and 18,081.12 is: 24,955.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,655.84 : 42,310.64 = 18,081.12 : x
  2. Step 2: Convert to fraction form
    30,655.84/42,310.64 = 18,081.12/x
  3. Step 3: Cross multiply
    30,655.84x = 42,310.64 × 18,081.12
  4. Step 4: Simplify right side
    30,655.84x = 765,023,759.12
  5. Step 5: Solve for x
    x = 765,023,759.12/30,655.84
  6. Step 6: Final answer
    x = 24,955.24

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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.