Home / 20,504.84-30,758.10-10,637.78

Finding the Fourth Proportional to 20,504.84, 30,758.10 and 10,637.78

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Solution

The fourth proportional to 20,504.84, 30,758.10 and 10,637.78 is: 15,957.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.84 : 30,758.10 = 10,637.78 : x
  2. Step 2: Convert to fraction form
    20,504.84/30,758.10 = 10,637.78/x
  3. Step 3: Cross multiply
    20,504.84x = 30,758.10 × 10,637.78
  4. Step 4: Simplify right side
    20,504.84x = 327,197,901.02
  5. Step 5: Solve for x
    x = 327,197,901.02/20,504.84
  6. Step 6: Final answer
    x = 15,957.11

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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.