Home / 21,400.90-32,083.95-8,930.21

Finding the Fourth Proportional to 21,400.90, 32,083.95 and 8,930.21

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Solution

The fourth proportional to 21,400.90, 32,083.95 and 8,930.21 is: 13,388.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.90 : 32,083.95 = 8,930.21 : x
  2. Step 2: Convert to fraction form
    21,400.90/32,083.95 = 8,930.21/x
  3. Step 3: Cross multiply
    21,400.90x = 32,083.95 × 8,930.21
  4. Step 4: Simplify right side
    21,400.90x = 286,516,286.27
  5. Step 5: Solve for x
    x = 286,516,286.27/21,400.90
  6. Step 6: Final answer
    x = 13,388.05

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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.