Home / 31,811.09-47,720.61-10,463.40

Finding the Fourth Proportional to 31,811.09, 47,720.61 and 10,463.40

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Solution

The fourth proportional to 31,811.09, 47,720.61 and 10,463.40 is: 15,696.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,811.09 : 47,720.61 = 10,463.40 : x
  2. Step 2: Convert to fraction form
    31,811.09/47,720.61 = 10,463.40/x
  3. Step 3: Cross multiply
    31,811.09x = 47,720.61 × 10,463.40
  4. Step 4: Simplify right side
    31,811.09x = 499,319,830.67
  5. Step 5: Solve for x
    x = 499,319,830.67/31,811.09
  6. Step 6: Final answer
    x = 15,696.41

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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.