Home / 15,146.05-20,902.56-9,178.30

Finding the Fourth Proportional to 15,146.05, 20,902.56 and 9,178.30

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Solution

The fourth proportional to 15,146.05, 20,902.56 and 9,178.30 is: 12,666.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,146.05 : 20,902.56 = 9,178.30 : x
  2. Step 2: Convert to fraction form
    15,146.05/20,902.56 = 9,178.30/x
  3. Step 3: Cross multiply
    15,146.05x = 20,902.56 × 9,178.30
  4. Step 4: Simplify right side
    15,146.05x = 191,849,920.56
  5. Step 5: Solve for x
    x = 191,849,920.56/15,146.05
  6. Step 6: Final answer
    x = 12,666.67

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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.