Home / 15,820.82-21,831.83-8,746.79

Finding the Fourth Proportional to 15,820.82, 21,831.83 and 8,746.79

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Solution

The fourth proportional to 15,820.82, 21,831.83 and 8,746.79 is: 12,070.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.82 : 21,831.83 = 8,746.79 : x
  2. Step 2: Convert to fraction form
    15,820.82/21,831.83 = 8,746.79/x
  3. Step 3: Cross multiply
    15,820.82x = 21,831.83 × 8,746.79
  4. Step 4: Simplify right side
    15,820.82x = 190,958,312.23
  5. Step 5: Solve for x
    x = 190,958,312.23/15,820.82
  6. Step 6: Final answer
    x = 12,070.07

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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.