Home / 15,806.32-21,816.13-10,782.56

Finding the Fourth Proportional to 15,806.32, 21,816.13 and 10,782.56

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Solution

The fourth proportional to 15,806.32, 21,816.13 and 10,782.56 is: 14,882.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,806.32 : 21,816.13 = 10,782.56 : x
  2. Step 2: Convert to fraction form
    15,806.32/21,816.13 = 10,782.56/x
  3. Step 3: Cross multiply
    15,806.32x = 21,816.13 × 10,782.56
  4. Step 4: Simplify right side
    15,806.32x = 235,233,730.69
  5. Step 5: Solve for x
    x = 235,233,730.69/15,806.32
  6. Step 6: Final answer
    x = 14,882.26

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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.