Home / 9,005.50-13,491.84-6,639.45

Finding the Fourth Proportional to 9,005.50, 13,491.84 and 6,639.45

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Solution

The fourth proportional to 9,005.50, 13,491.84 and 6,639.45 is: 9,947.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,005.50 : 13,491.84 = 6,639.45 : x
  2. Step 2: Convert to fraction form
    9,005.50/13,491.84 = 6,639.45/x
  3. Step 3: Cross multiply
    9,005.50x = 13,491.84 × 6,639.45
  4. Step 4: Simplify right side
    9,005.50x = 89,578,397.09
  5. Step 5: Solve for x
    x = 89,578,397.09/9,005.50
  6. Step 6: Final answer
    x = 9,947.08

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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.