Home / 13,831.72-19,072.65-9,347.69

Finding the Fourth Proportional to 13,831.72, 19,072.65 and 9,347.69

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Solution

The fourth proportional to 13,831.72, 19,072.65 and 9,347.69 is: 12,889.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.72 : 19,072.65 = 9,347.69 : x
  2. Step 2: Convert to fraction form
    13,831.72/19,072.65 = 9,347.69/x
  3. Step 3: Cross multiply
    13,831.72x = 19,072.65 × 9,347.69
  4. Step 4: Simplify right side
    13,831.72x = 178,285,219.68
  5. Step 5: Solve for x
    x = 178,285,219.68/13,831.72
  6. Step 6: Final answer
    x = 12,889.59

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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.