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Finding the Fourth Proportional to 25,831.51, 38,722.48 and 8,289.34

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Solution

The fourth proportional to 25,831.51, 38,722.48 and 8,289.34 is: 12,426.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,831.51 : 38,722.48 = 8,289.34 : x
  2. Step 2: Convert to fraction form
    25,831.51/38,722.48 = 8,289.34/x
  3. Step 3: Cross multiply
    25,831.51x = 38,722.48 × 8,289.34
  4. Step 4: Simplify right side
    25,831.51x = 320,983,802.36
  5. Step 5: Solve for x
    x = 320,983,802.36/25,831.51
  6. Step 6: Final answer
    x = 12,426.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.