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Finding the Fourth Proportional to 15,646.25, 21,591.83 and 9,360.11

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Solution

The fourth proportional to 15,646.25, 21,591.83 and 9,360.11 is: 12,916.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,646.25 : 21,591.83 = 9,360.11 : x
  2. Step 2: Convert to fraction form
    15,646.25/21,591.83 = 9,360.11/x
  3. Step 3: Cross multiply
    15,646.25x = 21,591.83 × 9,360.11
  4. Step 4: Simplify right side
    15,646.25x = 202,101,903.90
  5. Step 5: Solve for x
    x = 202,101,903.90/15,646.25
  6. Step 6: Final answer
    x = 12,916.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.