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Finding the Fourth Proportional to 14,166.50, 19,549.77 and 7,878.74

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Solution

The fourth proportional to 14,166.50, 19,549.77 and 7,878.74 is: 10,872.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,166.50 : 19,549.77 = 7,878.74 : x
  2. Step 2: Convert to fraction form
    14,166.50/19,549.77 = 7,878.74/x
  3. Step 3: Cross multiply
    14,166.50x = 19,549.77 × 7,878.74
  4. Step 4: Simplify right side
    14,166.50x = 154,027,554.89
  5. Step 5: Solve for x
    x = 154,027,554.89/14,166.50
  6. Step 6: Final answer
    x = 10,872.66

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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.