Home / 21,784.28-32,656.98-10,081.40

Finding the Fourth Proportional to 21,784.28, 32,656.98 and 10,081.40

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Solution

The fourth proportional to 21,784.28, 32,656.98 and 10,081.40 is: 15,113.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,784.28 : 32,656.98 = 10,081.40 : x
  2. Step 2: Convert to fraction form
    21,784.28/32,656.98 = 10,081.40/x
  3. Step 3: Cross multiply
    21,784.28x = 32,656.98 × 10,081.40
  4. Step 4: Simplify right side
    21,784.28x = 329,228,078.17
  5. Step 5: Solve for x
    x = 329,228,078.17/21,784.28
  6. Step 6: Final answer
    x = 15,113.10

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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.