Home / 21,393.48-31,933.57-18,868.44

Finding the Fourth Proportional to 21,393.48, 31,933.57 and 18,868.44

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Solution

The fourth proportional to 21,393.48, 31,933.57 and 18,868.44 is: 28,164.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.48 : 31,933.57 = 18,868.44 : x
  2. Step 2: Convert to fraction form
    21,393.48/31,933.57 = 18,868.44/x
  3. Step 3: Cross multiply
    21,393.48x = 31,933.57 × 18,868.44
  4. Step 4: Simplify right side
    21,393.48x = 602,536,649.53
  5. Step 5: Solve for x
    x = 602,536,649.53/21,393.48
  6. Step 6: Final answer
    x = 28,164.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.