Home / 15,819.75-21,831.62-10,240.47

Finding the Fourth Proportional to 15,819.75, 21,831.62 and 10,240.47

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Solution

The fourth proportional to 15,819.75, 21,831.62 and 10,240.47 is: 14,132.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,819.75 : 21,831.62 = 10,240.47 : x
  2. Step 2: Convert to fraction form
    15,819.75/21,831.62 = 10,240.47/x
  3. Step 3: Cross multiply
    15,819.75x = 21,831.62 × 10,240.47
  4. Step 4: Simplify right side
    15,819.75x = 223,565,998.46
  5. Step 5: Solve for x
    x = 223,565,998.46/15,819.75
  6. Step 6: Final answer
    x = 14,132.08

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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.