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Finding the Fourth Proportional to 12,673.79, 19,013.93 and 5,275.79

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Solution

The fourth proportional to 12,673.79, 19,013.93 and 5,275.79 is: 7,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,673.79 : 19,013.93 = 5,275.79 : x
  2. Step 2: Convert to fraction form
    12,673.79/19,013.93 = 5,275.79/x
  3. Step 3: Cross multiply
    12,673.79x = 19,013.93 × 5,275.79
  4. Step 4: Simplify right side
    12,673.79x = 100,313,475.38
  5. Step 5: Solve for x
    x = 100,313,475.38/12,673.79
  6. Step 6: Final answer
    x = 7,915.03

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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.