Home / 28,134.68-42,222.47-20,758.95

Finding the Fourth Proportional to 28,134.68, 42,222.47 and 20,758.95

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Solution

The fourth proportional to 28,134.68, 42,222.47 and 20,758.95 is: 31,153.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.68 : 42,222.47 = 20,758.95 : x
  2. Step 2: Convert to fraction form
    28,134.68/42,222.47 = 20,758.95/x
  3. Step 3: Cross multiply
    28,134.68x = 42,222.47 × 20,758.95
  4. Step 4: Simplify right side
    28,134.68x = 876,494,039.81
  5. Step 5: Solve for x
    x = 876,494,039.81/28,134.68
  6. Step 6: Final answer
    x = 31,153.52

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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.