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Finding the Fourth Proportional to 21,395.84, 32,085.62 and 8,569.08

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Solution

The fourth proportional to 21,395.84, 32,085.62 and 8,569.08 is: 12,850.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,395.84 : 32,085.62 = 8,569.08 : x
  2. Step 2: Convert to fraction form
    21,395.84/32,085.62 = 8,569.08/x
  3. Step 3: Cross multiply
    21,395.84x = 32,085.62 × 8,569.08
  4. Step 4: Simplify right side
    21,395.84x = 274,944,244.63
  5. Step 5: Solve for x
    x = 274,944,244.63/21,395.84
  6. Step 6: Final answer
    x = 12,850.36

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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.