Home / 21,618.30-32,405.16-15,680.31

Finding the Fourth Proportional to 21,618.30, 32,405.16 and 15,680.31

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Solution

The fourth proportional to 21,618.30, 32,405.16 and 15,680.31 is: 23,504.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,618.30 : 32,405.16 = 15,680.31 : x
  2. Step 2: Convert to fraction form
    21,618.30/32,405.16 = 15,680.31/x
  3. Step 3: Cross multiply
    21,618.30x = 32,405.16 × 15,680.31
  4. Step 4: Simplify right side
    21,618.30x = 508,122,954.40
  5. Step 5: Solve for x
    x = 508,122,954.40/21,618.30
  6. Step 6: Final answer
    x = 23,504.30

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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.