Home / 25,384.74-34,997.36-20,830.74

Finding the Fourth Proportional to 25,384.74, 34,997.36 and 20,830.74

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Solution

The fourth proportional to 25,384.74, 34,997.36 and 20,830.74 is: 28,718.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,384.74 : 34,997.36 = 20,830.74 : x
  2. Step 2: Convert to fraction form
    25,384.74/34,997.36 = 20,830.74/x
  3. Step 3: Cross multiply
    25,384.74x = 34,997.36 × 20,830.74
  4. Step 4: Simplify right side
    25,384.74x = 729,020,906.85
  5. Step 5: Solve for x
    x = 729,020,906.85/25,384.74
  6. Step 6: Final answer
    x = 28,718.86

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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.