Home / 15,921.24-21,981.15-10,257.99

Finding the Fourth Proportional to 15,921.24, 21,981.15 and 10,257.99

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Solution

The fourth proportional to 15,921.24, 21,981.15 and 10,257.99 is: 14,162.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.24 : 21,981.15 = 10,257.99 : x
  2. Step 2: Convert to fraction form
    15,921.24/21,981.15 = 10,257.99/x
  3. Step 3: Cross multiply
    15,921.24x = 21,981.15 × 10,257.99
  4. Step 4: Simplify right side
    15,921.24x = 225,482,416.89
  5. Step 5: Solve for x
    x = 225,482,416.89/15,921.24
  6. Step 6: Final answer
    x = 14,162.37

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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.