Home / 18,969.72-28,432.38-14,274.66

Finding the Fourth Proportional to 18,969.72, 28,432.38 and 14,274.66

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Solution

The fourth proportional to 18,969.72, 28,432.38 and 14,274.66 is: 21,395.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.72 : 28,432.38 = 14,274.66 : x
  2. Step 2: Convert to fraction form
    18,969.72/28,432.38 = 14,274.66/x
  3. Step 3: Cross multiply
    18,969.72x = 28,432.38 × 14,274.66
  4. Step 4: Simplify right side
    18,969.72x = 405,862,557.49
  5. Step 5: Solve for x
    x = 405,862,557.49/18,969.72
  6. Step 6: Final answer
    x = 21,395.28

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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.