Home / 30,527.52-42,135.12-19,898.64

Finding the Fourth Proportional to 30,527.52, 42,135.12 and 19,898.64

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Solution

The fourth proportional to 30,527.52, 42,135.12 and 19,898.64 is: 27,464.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,527.52 : 42,135.12 = 19,898.64 : x
  2. Step 2: Convert to fraction form
    30,527.52/42,135.12 = 19,898.64/x
  3. Step 3: Cross multiply
    30,527.52x = 42,135.12 × 19,898.64
  4. Step 4: Simplify right side
    30,527.52x = 838,431,584.24
  5. Step 5: Solve for x
    x = 838,431,584.24/30,527.52
  6. Step 6: Final answer
    x = 27,464.78

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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.