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Finding the Fourth Proportional to 14,244.76, 19,656.84 and 7,871.32

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Solution

The fourth proportional to 14,244.76, 19,656.84 and 7,871.32 is: 10,861.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,244.76 : 19,656.84 = 7,871.32 : x
  2. Step 2: Convert to fraction form
    14,244.76/19,656.84 = 7,871.32/x
  3. Step 3: Cross multiply
    14,244.76x = 19,656.84 × 7,871.32
  4. Step 4: Simplify right side
    14,244.76x = 154,725,277.83
  5. Step 5: Solve for x
    x = 154,725,277.83/14,244.76
  6. Step 6: Final answer
    x = 10,861.91

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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.