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Finding the Fourth Proportional to 10,886.79, 16,321.95 and 5,619.51

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Solution

The fourth proportional to 10,886.79, 16,321.95 and 5,619.51 is: 8,425.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,886.79 : 16,321.95 = 5,619.51 : x
  2. Step 2: Convert to fraction form
    10,886.79/16,321.95 = 5,619.51/x
  3. Step 3: Cross multiply
    10,886.79x = 16,321.95 × 5,619.51
  4. Step 4: Simplify right side
    10,886.79x = 91,721,361.24
  5. Step 5: Solve for x
    x = 91,721,361.24/10,886.79
  6. Step 6: Final answer
    x = 8,425.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.