Home / 15,553.09-21,462.45-8,837.78

Finding the Fourth Proportional to 15,553.09, 21,462.45 and 8,837.78

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Solution

The fourth proportional to 15,553.09, 21,462.45 and 8,837.78 is: 12,195.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,553.09 : 21,462.45 = 8,837.78 : x
  2. Step 2: Convert to fraction form
    15,553.09/21,462.45 = 8,837.78/x
  3. Step 3: Cross multiply
    15,553.09x = 21,462.45 × 8,837.78
  4. Step 4: Simplify right side
    15,553.09x = 189,680,411.36
  5. Step 5: Solve for x
    x = 189,680,411.36/15,553.09
  6. Step 6: Final answer
    x = 12,195.67

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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.