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Finding the Fourth Proportional to 14,047.79, 19,385.95 and 7,760.17

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Solution

The fourth proportional to 14,047.79, 19,385.95 and 7,760.17 is: 10,709.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,047.79 : 19,385.95 = 7,760.17 : x
  2. Step 2: Convert to fraction form
    14,047.79/19,385.95 = 7,760.17/x
  3. Step 3: Cross multiply
    14,047.79x = 19,385.95 × 7,760.17
  4. Step 4: Simplify right side
    14,047.79x = 150,438,131.88
  5. Step 5: Solve for x
    x = 150,438,131.88/14,047.79
  6. Step 6: Final answer
    x = 10,709.02

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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.