Home / 15,820.26-21,831.21-8,650.55

Finding the Fourth Proportional to 15,820.26, 21,831.21 and 8,650.55

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Solution

The fourth proportional to 15,820.26, 21,831.21 and 8,650.55 is: 11,937.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.26 : 21,831.21 = 8,650.55 : x
  2. Step 2: Convert to fraction form
    15,820.26/21,831.21 = 8,650.55/x
  3. Step 3: Cross multiply
    15,820.26x = 21,831.21 × 8,650.55
  4. Step 4: Simplify right side
    15,820.26x = 188,851,864.51
  5. Step 5: Solve for x
    x = 188,851,864.51/15,820.26
  6. Step 6: Final answer
    x = 11,937.34

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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.