Home / 30,765.42-42,432.12-22,268.79

Finding the Fourth Proportional to 30,765.42, 42,432.12 and 22,268.79

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Solution

The fourth proportional to 30,765.42, 42,432.12 and 22,268.79 is: 30,713.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,765.42 : 42,432.12 = 22,268.79 : x
  2. Step 2: Convert to fraction form
    30,765.42/42,432.12 = 22,268.79/x
  3. Step 3: Cross multiply
    30,765.42x = 42,432.12 × 22,268.79
  4. Step 4: Simplify right side
    30,765.42x = 944,911,969.53
  5. Step 5: Solve for x
    x = 944,911,969.53/30,765.42
  6. Step 6: Final answer
    x = 30,713.44

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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.