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Finding the Fourth Proportional to 14,502.56, 20,013.48 and 7,878.56

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Solution

The fourth proportional to 14,502.56, 20,013.48 and 7,878.56 is: 10,872.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,502.56 : 20,013.48 = 7,878.56 : x
  2. Step 2: Convert to fraction form
    14,502.56/20,013.48 = 7,878.56/x
  3. Step 3: Cross multiply
    14,502.56x = 20,013.48 × 7,878.56
  4. Step 4: Simplify right side
    14,502.56x = 157,677,402.99
  5. Step 5: Solve for x
    x = 157,677,402.99/14,502.56
  6. Step 6: Final answer
    x = 10,872.38

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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.