Home / 15,605.17-21,533.50-8,889.39

Finding the Fourth Proportional to 15,605.17, 21,533.50 and 8,889.39

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Solution

The fourth proportional to 15,605.17, 21,533.50 and 8,889.39 is: 12,266.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.17 : 21,533.50 = 8,889.39 : x
  2. Step 2: Convert to fraction form
    15,605.17/21,533.50 = 8,889.39/x
  3. Step 3: Cross multiply
    15,605.17x = 21,533.50 × 8,889.39
  4. Step 4: Simplify right side
    15,605.17x = 191,419,679.57
  5. Step 5: Solve for x
    x = 191,419,679.57/15,605.17
  6. Step 6: Final answer
    x = 12,266.43

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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.