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Finding the Fourth Proportional to 14,042.16, 19,377.81 and 7,754.40

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Solution

The fourth proportional to 14,042.16, 19,377.81 and 7,754.40 is: 10,700.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,042.16 : 19,377.81 = 7,754.40 : x
  2. Step 2: Convert to fraction form
    14,042.16/19,377.81 = 7,754.40/x
  3. Step 3: Cross multiply
    14,042.16x = 19,377.81 × 7,754.40
  4. Step 4: Simplify right side
    14,042.16x = 150,263,289.86
  5. Step 5: Solve for x
    x = 150,263,289.86/14,042.16
  6. Step 6: Final answer
    x = 10,700.87

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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.