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Finding the Fourth Proportional to 21,411.60, 32,117.40 and 19,224.60

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Solution

The fourth proportional to 21,411.60, 32,117.40 and 19,224.60 is: 28,836.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,411.60 : 32,117.40 = 19,224.60 : x
  2. Step 2: Convert to fraction form
    21,411.60/32,117.40 = 19,224.60/x
  3. Step 3: Cross multiply
    21,411.60x = 32,117.40 × 19,224.60
  4. Step 4: Simplify right side
    21,411.60x = 617,444,168.04
  5. Step 5: Solve for x
    x = 617,444,168.04/21,411.60
  6. Step 6: Final answer
    x = 28,836.90

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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.