Home / 35,520.24-49,019.40-20,412.72

Finding the Fourth Proportional to 35,520.24, 49,019.40 and 20,412.72

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Solution

The fourth proportional to 35,520.24, 49,019.40 and 20,412.72 is: 28,170.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,520.24 : 49,019.40 = 20,412.72 : x
  2. Step 2: Convert to fraction form
    35,520.24/49,019.40 = 20,412.72/x
  3. Step 3: Cross multiply
    35,520.24x = 49,019.40 × 20,412.72
  4. Step 4: Simplify right side
    35,520.24x = 1,000,619,286.77
  5. Step 5: Solve for x
    x = 1,000,619,286.77/35,520.24
  6. Step 6: Final answer
    x = 28,170.40

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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.