Home / 15,905.04-21,949.08-8,831.52

Finding the Fourth Proportional to 15,905.04, 21,949.08 and 8,831.52

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Solution

The fourth proportional to 15,905.04, 21,949.08 and 8,831.52 is: 12,187.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.04 : 21,949.08 = 8,831.52 : x
  2. Step 2: Convert to fraction form
    15,905.04/21,949.08 = 8,831.52/x
  3. Step 3: Cross multiply
    15,905.04x = 21,949.08 × 8,831.52
  4. Step 4: Simplify right side
    15,905.04x = 193,843,739.00
  5. Step 5: Solve for x
    x = 193,843,739.00/15,905.04
  6. Step 6: Final answer
    x = 12,187.57

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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.