Home / 21,237.20-31,812.60-17,349.20

Finding the Fourth Proportional to 21,237.20, 31,812.60 and 17,349.20

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Solution

The fourth proportional to 21,237.20, 31,812.60 and 17,349.20 is: 25,988.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.20 : 31,812.60 = 17,349.20 : x
  2. Step 2: Convert to fraction form
    21,237.20/31,812.60 = 17,349.20/x
  3. Step 3: Cross multiply
    21,237.20x = 31,812.60 × 17,349.20
  4. Step 4: Simplify right side
    21,237.20x = 551,923,159.92
  5. Step 5: Solve for x
    x = 551,923,159.92/21,237.20
  6. Step 6: Final answer
    x = 25,988.51

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1.5x scale

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.