Home / 20,520.84-30,803.13-19,777.26

Finding the Fourth Proportional to 20,520.84, 30,803.13 and 19,777.26

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Solution

The fourth proportional to 20,520.84, 30,803.13 and 19,777.26 is: 29,686.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.84 : 30,803.13 = 19,777.26 : x
  2. Step 2: Convert to fraction form
    20,520.84/30,803.13 = 19,777.26/x
  3. Step 3: Cross multiply
    20,520.84x = 30,803.13 × 19,777.26
  4. Step 4: Simplify right side
    20,520.84x = 609,201,510.82
  5. Step 5: Solve for x
    x = 609,201,510.82/20,520.84
  6. Step 6: Final answer
    x = 29,686.97

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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.