Home / 15,383.34-21,229.02-8,309.76

Finding the Fourth Proportional to 15,383.34, 21,229.02 and 8,309.76

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Solution

The fourth proportional to 15,383.34, 21,229.02 and 8,309.76 is: 11,467.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,383.34 : 21,229.02 = 8,309.76 : x
  2. Step 2: Convert to fraction form
    15,383.34/21,229.02 = 8,309.76/x
  3. Step 3: Cross multiply
    15,383.34x = 21,229.02 × 8,309.76
  4. Step 4: Simplify right side
    15,383.34x = 176,408,061.24
  5. Step 5: Solve for x
    x = 176,408,061.24/15,383.34
  6. Step 6: Final answer
    x = 11,467.47

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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.