Home / 10,687.05-16,030.11-7,178.55

Finding the Fourth Proportional to 10,687.05, 16,030.11 and 7,178.55

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Solution

The fourth proportional to 10,687.05, 16,030.11 and 7,178.55 is: 10,767.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,687.05 : 16,030.11 = 7,178.55 : x
  2. Step 2: Convert to fraction form
    10,687.05/16,030.11 = 7,178.55/x
  3. Step 3: Cross multiply
    10,687.05x = 16,030.11 × 7,178.55
  4. Step 4: Simplify right side
    10,687.05x = 115,072,946.14
  5. Step 5: Solve for x
    x = 115,072,946.14/10,687.05
  6. Step 6: Final answer
    x = 10,767.51

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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.