Home / 29,128.84-40,155.01-20,604.70

Finding the Fourth Proportional to 29,128.84, 40,155.01 and 20,604.70

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Solution

The fourth proportional to 29,128.84, 40,155.01 and 20,604.70 is: 28,404.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,128.84 : 40,155.01 = 20,604.70 : x
  2. Step 2: Convert to fraction form
    29,128.84/40,155.01 = 20,604.70/x
  3. Step 3: Cross multiply
    29,128.84x = 40,155.01 × 20,604.70
  4. Step 4: Simplify right side
    29,128.84x = 827,381,933.23
  5. Step 5: Solve for x
    x = 827,381,933.23/29,128.84
  6. Step 6: Final answer
    x = 28,404.22

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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.