Home / 15,846.99-21,865.14-10,821.66

Finding the Fourth Proportional to 15,846.99, 21,865.14 and 10,821.66

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Solution

The fourth proportional to 15,846.99, 21,865.14 and 10,821.66 is: 14,931.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,846.99 : 21,865.14 = 10,821.66 : x
  2. Step 2: Convert to fraction form
    15,846.99/21,865.14 = 10,821.66/x
  3. Step 3: Cross multiply
    15,846.99x = 21,865.14 × 10,821.66
  4. Step 4: Simplify right side
    15,846.99x = 236,617,110.93
  5. Step 5: Solve for x
    x = 236,617,110.93/15,846.99
  6. Step 6: Final answer
    x = 14,931.36

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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.