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Finding the Fourth Proportional to 13,079.94, 18,045.90 and 7,414.08

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Solution

The fourth proportional to 13,079.94, 18,045.90 and 7,414.08 is: 10,228.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,079.94 : 18,045.90 = 7,414.08 : x
  2. Step 2: Convert to fraction form
    13,079.94/18,045.90 = 7,414.08/x
  3. Step 3: Cross multiply
    13,079.94x = 18,045.90 × 7,414.08
  4. Step 4: Simplify right side
    13,079.94x = 133,793,746.27
  5. Step 5: Solve for x
    x = 133,793,746.27/13,079.94
  6. Step 6: Final answer
    x = 10,228.93

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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.