Home / 21,881.26-30,168.50-14,315.60

Finding the Fourth Proportional to 21,881.26, 30,168.50 and 14,315.60

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Solution

The fourth proportional to 21,881.26, 30,168.50 and 14,315.60 is: 19,737.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,881.26 : 30,168.50 = 14,315.60 : x
  2. Step 2: Convert to fraction form
    21,881.26/30,168.50 = 14,315.60/x
  3. Step 3: Cross multiply
    21,881.26x = 30,168.50 × 14,315.60
  4. Step 4: Simplify right side
    21,881.26x = 431,880,262.97
  5. Step 5: Solve for x
    x = 431,880,262.97/21,881.26
  6. Step 6: Final answer
    x = 19,737.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.