Home / 15,811.39-21,822.78-10,153.32

Finding the Fourth Proportional to 15,811.39, 21,822.78 and 10,153.32

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Solution

The fourth proportional to 15,811.39, 21,822.78 and 10,153.32 is: 14,013.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.39 : 21,822.78 = 10,153.32 : x
  2. Step 2: Convert to fraction form
    15,811.39/21,822.78 = 10,153.32/x
  3. Step 3: Cross multiply
    15,811.39x = 21,822.78 × 10,153.32
  4. Step 4: Simplify right side
    15,811.39x = 221,573,668.63
  5. Step 5: Solve for x
    x = 221,573,668.63/15,811.39
  6. Step 6: Final answer
    x = 14,013.55

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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.