Home / 31,811.64-47,719.32-10,749.84

Finding the Fourth Proportional to 31,811.64, 47,719.32 and 10,749.84

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Solution

The fourth proportional to 31,811.64, 47,719.32 and 10,749.84 is: 16,125.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,811.64 : 47,719.32 = 10,749.84 : x
  2. Step 2: Convert to fraction form
    31,811.64/47,719.32 = 10,749.84/x
  3. Step 3: Cross multiply
    31,811.64x = 47,719.32 × 10,749.84
  4. Step 4: Simplify right side
    31,811.64x = 512,975,054.91
  5. Step 5: Solve for x
    x = 512,975,054.91/31,811.64
  6. Step 6: Final answer
    x = 16,125.39

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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.