Home / 25,128.80-37,668.40-14,040.80

Finding the Fourth Proportional to 25,128.80, 37,668.40 and 14,040.80

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Solution

The fourth proportional to 25,128.80, 37,668.40 and 14,040.80 is: 21,047.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,128.80 : 37,668.40 = 14,040.80 : x
  2. Step 2: Convert to fraction form
    25,128.80/37,668.40 = 14,040.80/x
  3. Step 3: Cross multiply
    25,128.80x = 37,668.40 × 14,040.80
  4. Step 4: Simplify right side
    25,128.80x = 528,894,470.72
  5. Step 5: Solve for x
    x = 528,894,470.72/25,128.80
  6. Step 6: Final answer
    x = 21,047.34

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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.