Home / 42,755.12-64,049.64-20,584.07

Finding the Fourth Proportional to 42,755.12, 64,049.64 and 20,584.07

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Solution

The fourth proportional to 42,755.12, 64,049.64 and 20,584.07 is: 30,836.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,755.12 : 64,049.64 = 20,584.07 : x
  2. Step 2: Convert to fraction form
    42,755.12/64,049.64 = 20,584.07/x
  3. Step 3: Cross multiply
    42,755.12x = 64,049.64 × 20,584.07
  4. Step 4: Simplify right side
    42,755.12x = 1,318,402,273.23
  5. Step 5: Solve for x
    x = 1,318,402,273.23/42,755.12
  6. Step 6: Final answer
    x = 30,836.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.