Home / 20,271.15-30,273.64-17,277.70

Finding the Fourth Proportional to 20,271.15, 30,273.64 and 17,277.70

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Solution

The fourth proportional to 20,271.15, 30,273.64 and 17,277.70 is: 25,803.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.15 : 30,273.64 = 17,277.70 : x
  2. Step 2: Convert to fraction form
    20,271.15/30,273.64 = 17,277.70/x
  3. Step 3: Cross multiply
    20,271.15x = 30,273.64 × 17,277.70
  4. Step 4: Simplify right side
    20,271.15x = 523,058,869.83
  5. Step 5: Solve for x
    x = 523,058,869.83/20,271.15
  6. Step 6: Final answer
    x = 25,803.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.