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Finding the Fourth Proportional to 10,551.84, 15,809.58 and 6,991.74

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Solution

The fourth proportional to 10,551.84, 15,809.58 and 6,991.74 is: 10,475.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,551.84 : 15,809.58 = 6,991.74 : x
  2. Step 2: Convert to fraction form
    10,551.84/15,809.58 = 6,991.74/x
  3. Step 3: Cross multiply
    10,551.84x = 15,809.58 × 6,991.74
  4. Step 4: Simplify right side
    10,551.84x = 110,536,472.87
  5. Step 5: Solve for x
    x = 110,536,472.87/10,551.84
  6. Step 6: Final answer
    x = 10,475.56

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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.