Home / 28,049.47-42,076.51-20,188.57

Finding the Fourth Proportional to 28,049.47, 42,076.51 and 20,188.57

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Solution

The fourth proportional to 28,049.47, 42,076.51 and 20,188.57 is: 30,284.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,049.47 : 42,076.51 = 20,188.57 : x
  2. Step 2: Convert to fraction form
    28,049.47/42,076.51 = 20,188.57/x
  3. Step 3: Cross multiply
    28,049.47x = 42,076.51 × 20,188.57
  4. Step 4: Simplify right side
    28,049.47x = 849,464,411.83
  5. Step 5: Solve for x
    x = 849,464,411.83/28,049.47
  6. Step 6: Final answer
    x = 30,284.51

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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.