Home / 15,377.24-21,221.60-8,664.57

Finding the Fourth Proportional to 15,377.24, 21,221.60 and 8,664.57

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Solution

The fourth proportional to 15,377.24, 21,221.60 and 8,664.57 is: 11,957.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.24 : 21,221.60 = 8,664.57 : x
  2. Step 2: Convert to fraction form
    15,377.24/21,221.60 = 8,664.57/x
  3. Step 3: Cross multiply
    15,377.24x = 21,221.60 × 8,664.57
  4. Step 4: Simplify right side
    15,377.24x = 183,875,995.39
  5. Step 5: Solve for x
    x = 183,875,995.39/15,377.24
  6. Step 6: Final answer
    x = 11,957.67

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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.