Home / 11,119.73-15,337.95-6,639.98

Finding the Fourth Proportional to 11,119.73, 15,337.95 and 6,639.98

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Solution

The fourth proportional to 11,119.73, 15,337.95 and 6,639.98 is: 9,158.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,119.73 : 15,337.95 = 6,639.98 : x
  2. Step 2: Convert to fraction form
    11,119.73/15,337.95 = 6,639.98/x
  3. Step 3: Cross multiply
    11,119.73x = 15,337.95 × 6,639.98
  4. Step 4: Simplify right side
    11,119.73x = 101,843,681.24
  5. Step 5: Solve for x
    x = 101,843,681.24/11,119.73
  6. Step 6: Final answer
    x = 9,158.83

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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.