Home / 15,623.24-21,560.64-8,907.78

Finding the Fourth Proportional to 15,623.24, 21,560.64 and 8,907.78

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Solution

The fourth proportional to 15,623.24, 21,560.64 and 8,907.78 is: 12,293.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,623.24 : 21,560.64 = 8,907.78 : x
  2. Step 2: Convert to fraction form
    15,623.24/21,560.64 = 8,907.78/x
  3. Step 3: Cross multiply
    15,623.24x = 21,560.64 × 8,907.78
  4. Step 4: Simplify right side
    15,623.24x = 192,057,437.78
  5. Step 5: Solve for x
    x = 192,057,437.78/15,623.24
  6. Step 6: Final answer
    x = 12,293.06

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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.