Home / 21,388.59-32,088.35-8,904.46

Finding the Fourth Proportional to 21,388.59, 32,088.35 and 8,904.46

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Solution

The fourth proportional to 21,388.59, 32,088.35 and 8,904.46 is: 13,358.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,388.59 : 32,088.35 = 8,904.46 : x
  2. Step 2: Convert to fraction form
    21,388.59/32,088.35 = 8,904.46/x
  3. Step 3: Cross multiply
    21,388.59x = 32,088.35 × 8,904.46
  4. Step 4: Simplify right side
    21,388.59x = 285,729,384.52
  5. Step 5: Solve for x
    x = 285,729,384.52/21,388.59
  6. Step 6: Final answer
    x = 13,358.97

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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.