Home / 15,811.32-21,829.80-10,148.52

Finding the Fourth Proportional to 15,811.32, 21,829.80 and 10,148.52

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Solution

The fourth proportional to 15,811.32, 21,829.80 and 10,148.52 is: 14,011.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.32 : 21,829.80 = 10,148.52 : x
  2. Step 2: Convert to fraction form
    15,811.32/21,829.80 = 10,148.52/x
  3. Step 3: Cross multiply
    15,811.32x = 21,829.80 × 10,148.52
  4. Step 4: Simplify right side
    15,811.32x = 221,540,161.90
  5. Step 5: Solve for x
    x = 221,540,161.90/15,811.32
  6. Step 6: Final answer
    x = 14,011.49

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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.