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Finding the Fourth Proportional to 10,065.84, 13,890.62 and 5,589.58

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Solution

The fourth proportional to 10,065.84, 13,890.62 and 5,589.58 is: 7,713.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,065.84 : 13,890.62 = 5,589.58 : x
  2. Step 2: Convert to fraction form
    10,065.84/13,890.62 = 5,589.58/x
  3. Step 3: Cross multiply
    10,065.84x = 13,890.62 × 5,589.58
  4. Step 4: Simplify right side
    10,065.84x = 77,642,731.74
  5. Step 5: Solve for x
    x = 77,642,731.74/10,065.84
  6. Step 6: Final answer
    x = 7,713.49

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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.