Home / 20,654.79-30,983.70-5,864.90

Finding the Fourth Proportional to 20,654.79, 30,983.70 and 5,864.90

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Solution

The fourth proportional to 20,654.79, 30,983.70 and 5,864.90 is: 8,797.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.79 : 30,983.70 = 5,864.90 : x
  2. Step 2: Convert to fraction form
    20,654.79/30,983.70 = 5,864.90/x
  3. Step 3: Cross multiply
    20,654.79x = 30,983.70 × 5,864.90
  4. Step 4: Simplify right side
    20,654.79x = 181,716,117.89
  5. Step 5: Solve for x
    x = 181,716,117.89/20,654.79
  6. Step 6: Final answer
    x = 8,797.77

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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.