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Finding the Fourth Proportional to 10,018.84, 15,011 and 6,639.56

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Solution

The fourth proportional to 10,018.84, 15,011 and 6,639.56 is: 9,947.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,018.84 : 15,011 = 6,639.56 : x
  2. Step 2: Convert to fraction form
    10,018.84/15,011 = 6,639.56/x
  3. Step 3: Cross multiply
    10,018.84x = 15,011 × 6,639.56
  4. Step 4: Simplify right side
    10,018.84x = 99,666,435.16
  5. Step 5: Solve for x
    x = 99,666,435.16/10,018.84
  6. Step 6: Final answer
    x = 9,947.90

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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.