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Finding the Fourth Proportional to 21,509.60, 32,264.40 and 17,618.40

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Solution

The fourth proportional to 21,509.60, 32,264.40 and 17,618.40 is: 26,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,509.60 : 32,264.40 = 17,618.40 : x
  2. Step 2: Convert to fraction form
    21,509.60/32,264.40 = 17,618.40/x
  3. Step 3: Cross multiply
    21,509.60x = 32,264.40 × 17,618.40
  4. Step 4: Simplify right side
    21,509.60x = 568,447,104.96
  5. Step 5: Solve for x
    x = 568,447,104.96/21,509.60
  6. Step 6: Final answer
    x = 26,427.60

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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.