Home / 15,820.60-21,831.74-8,650.33

Finding the Fourth Proportional to 15,820.60, 21,831.74 and 8,650.33

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Solution

The fourth proportional to 15,820.60, 21,831.74 and 8,650.33 is: 11,937.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.60 : 21,831.74 = 8,650.33 : x
  2. Step 2: Convert to fraction form
    15,820.60/21,831.74 = 8,650.33/x
  3. Step 3: Cross multiply
    15,820.60x = 21,831.74 × 8,650.33
  4. Step 4: Simplify right side
    15,820.60x = 188,851,755.47
  5. Step 5: Solve for x
    x = 188,851,755.47/15,820.60
  6. Step 6: Final answer
    x = 11,937.08

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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.