Home / 21,388.64-32,088.42-8,904.52

Finding the Fourth Proportional to 21,388.64, 32,088.42 and 8,904.52

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Solution

The fourth proportional to 21,388.64, 32,088.42 and 8,904.52 is: 13,359.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388.64 : 32,088.42 = 8,904.52 : x
  2. Step 2: Convert to fraction form
    21,388.64/32,088.42 = 8,904.52/x
  3. Step 3: Cross multiply
    21,388.64x = 32,088.42 × 8,904.52
  4. Step 4: Simplify right side
    21,388.64x = 285,731,977.66
  5. Step 5: Solve for x
    x = 285,731,977.66/21,388.64
  6. Step 6: Final answer
    x = 13,359.05

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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.