Home / 13,384.35-18,479.07-8,606.45

Finding the Fourth Proportional to 13,384.35, 18,479.07 and 8,606.45

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Solution

The fourth proportional to 13,384.35, 18,479.07 and 8,606.45 is: 11,882.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.35 : 18,479.07 = 8,606.45 : x
  2. Step 2: Convert to fraction form
    13,384.35/18,479.07 = 8,606.45/x
  3. Step 3: Cross multiply
    13,384.35x = 18,479.07 × 8,606.45
  4. Step 4: Simplify right side
    13,384.35x = 159,039,099.61
  5. Step 5: Solve for x
    x = 159,039,099.61/13,384.35
  6. Step 6: Final answer
    x = 11,882.47

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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.