Home / 30,772.64-42,445.10-18,841.84

Finding the Fourth Proportional to 30,772.64, 42,445.10 and 18,841.84

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Solution

The fourth proportional to 30,772.64, 42,445.10 and 18,841.84 is: 25,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,772.64 : 42,445.10 = 18,841.84 : x
  2. Step 2: Convert to fraction form
    30,772.64/42,445.10 = 18,841.84/x
  3. Step 3: Cross multiply
    30,772.64x = 42,445.10 × 18,841.84
  4. Step 4: Simplify right side
    30,772.64x = 799,743,723.98
  5. Step 5: Solve for x
    x = 799,743,723.98/30,772.64
  6. Step 6: Final answer
    x = 25,988.79

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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.