Home / 15,831.16-21,845.64-8,755.82

Finding the Fourth Proportional to 15,831.16, 21,845.64 and 8,755.82

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Solution

The fourth proportional to 15,831.16, 21,845.64 and 8,755.82 is: 12,082.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,831.16 : 21,845.64 = 8,755.82 : x
  2. Step 2: Convert to fraction form
    15,831.16/21,845.64 = 8,755.82/x
  3. Step 3: Cross multiply
    15,831.16x = 21,845.64 × 8,755.82
  4. Step 4: Simplify right side
    15,831.16x = 191,276,491.62
  5. Step 5: Solve for x
    x = 191,276,491.62/15,831.16
  6. Step 6: Final answer
    x = 12,082.28

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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.