Home / 10,831.37-14,947.29-6,115.68

Finding the Fourth Proportional to 10,831.37, 14,947.29 and 6,115.68

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Solution

The fourth proportional to 10,831.37, 14,947.29 and 6,115.68 is: 8,439.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,831.37 : 14,947.29 = 6,115.68 : x
  2. Step 2: Convert to fraction form
    10,831.37/14,947.29 = 6,115.68/x
  3. Step 3: Cross multiply
    10,831.37x = 14,947.29 × 6,115.68
  4. Step 4: Simplify right side
    10,831.37x = 91,412,842.51
  5. Step 5: Solve for x
    x = 91,412,842.51/10,831.37
  6. Step 6: Final answer
    x = 8,439.64

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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.