Home / 10,905.48-15,058.44-8,889.21

Finding the Fourth Proportional to 10,905.48, 15,058.44 and 8,889.21

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Solution

The fourth proportional to 10,905.48, 15,058.44 and 8,889.21 is: 12,274.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.48 : 15,058.44 = 8,889.21 : x
  2. Step 2: Convert to fraction form
    10,905.48/15,058.44 = 8,889.21/x
  3. Step 3: Cross multiply
    10,905.48x = 15,058.44 × 8,889.21
  4. Step 4: Simplify right side
    10,905.48x = 133,857,635.43
  5. Step 5: Solve for x
    x = 133,857,635.43/10,905.48
  6. Step 6: Final answer
    x = 12,274.35

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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.