Home / 31,828.80-47,762.70-13,117.80

Finding the Fourth Proportional to 31,828.80, 47,762.70 and 13,117.80

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Solution

The fourth proportional to 31,828.80, 47,762.70 and 13,117.80 is: 19,684.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,828.80 : 47,762.70 = 13,117.80 : x
  2. Step 2: Convert to fraction form
    31,828.80/47,762.70 = 13,117.80/x
  3. Step 3: Cross multiply
    31,828.80x = 47,762.70 × 13,117.80
  4. Step 4: Simplify right side
    31,828.80x = 626,541,546.06
  5. Step 5: Solve for x
    x = 626,541,546.06/31,828.80
  6. Step 6: Final answer
    x = 19,684.74

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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.