Home / 21,529.19-32,135.38-19,988.57

Finding the Fourth Proportional to 21,529.19, 32,135.38 and 19,988.57

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Solution

The fourth proportional to 21,529.19, 32,135.38 and 19,988.57 is: 29,835.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.19 : 32,135.38 = 19,988.57 : x
  2. Step 2: Convert to fraction form
    21,529.19/32,135.38 = 19,988.57/x
  3. Step 3: Cross multiply
    21,529.19x = 32,135.38 × 19,988.57
  4. Step 4: Simplify right side
    21,529.19x = 642,340,435.41
  5. Step 5: Solve for x
    x = 642,340,435.41/21,529.19
  6. Step 6: Final answer
    x = 29,835.79

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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.