Home / 20,529.80-30,794.70-19,579.40

Finding the Fourth Proportional to 20,529.80, 30,794.70 and 19,579.40

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Solution

The fourth proportional to 20,529.80, 30,794.70 and 19,579.40 is: 29,369.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.80 : 30,794.70 = 19,579.40 : x
  2. Step 2: Convert to fraction form
    20,529.80/30,794.70 = 19,579.40/x
  3. Step 3: Cross multiply
    20,529.80x = 30,794.70 × 19,579.40
  4. Step 4: Simplify right side
    20,529.80x = 602,941,749.18
  5. Step 5: Solve for x
    x = 602,941,749.18/20,529.80
  6. Step 6: Final answer
    x = 29,369.10

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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.