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Finding the Fourth Proportional to 34,614.66, 51,931.22 and 12,428.23

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Solution

The fourth proportional to 34,614.66, 51,931.22 and 12,428.23 is: 18,645.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,614.66 : 51,931.22 = 12,428.23 : x
  2. Step 2: Convert to fraction form
    34,614.66/51,931.22 = 12,428.23/x
  3. Step 3: Cross multiply
    34,614.66x = 51,931.22 × 12,428.23
  4. Step 4: Simplify right side
    34,614.66x = 645,412,954.37
  5. Step 5: Solve for x
    x = 645,412,954.37/34,614.66
  6. Step 6: Final answer
    x = 18,645.65

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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.