Home / 15,487.72-21,371.94-9,203.56

Finding the Fourth Proportional to 15,487.72, 21,371.94 and 9,203.56

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Solution

The fourth proportional to 15,487.72, 21,371.94 and 9,203.56 is: 12,700.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,487.72 : 21,371.94 = 9,203.56 : x
  2. Step 2: Convert to fraction form
    15,487.72/21,371.94 = 9,203.56/x
  3. Step 3: Cross multiply
    15,487.72x = 21,371.94 × 9,203.56
  4. Step 4: Simplify right side
    15,487.72x = 196,697,932.11
  5. Step 5: Solve for x
    x = 196,697,932.11/15,487.72
  6. Step 6: Final answer
    x = 12,700.25

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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.