Home / 21,438.36-32,188.23-13,134.87

Finding the Fourth Proportional to 21,438.36, 32,188.23 and 13,134.87

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Solution

The fourth proportional to 21,438.36, 32,188.23 and 13,134.87 is: 19,721.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.36 : 32,188.23 = 13,134.87 : x
  2. Step 2: Convert to fraction form
    21,438.36/32,188.23 = 13,134.87/x
  3. Step 3: Cross multiply
    21,438.36x = 32,188.23 × 13,134.87
  4. Step 4: Simplify right side
    21,438.36x = 422,788,216.58
  5. Step 5: Solve for x
    x = 422,788,216.58/21,438.36
  6. Step 6: Final answer
    x = 19,721.11

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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.