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Finding the Fourth Proportional to 15,903.83, 21,947.97 and 8,830.25

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Solution

The fourth proportional to 15,903.83, 21,947.97 and 8,830.25 is: 12,186.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.83 : 21,947.97 = 8,830.25 : x
  2. Step 2: Convert to fraction form
    15,903.83/21,947.97 = 8,830.25/x
  3. Step 3: Cross multiply
    15,903.83x = 21,947.97 × 8,830.25
  4. Step 4: Simplify right side
    15,903.83x = 193,806,062.09
  5. Step 5: Solve for x
    x = 193,806,062.09/15,903.83
  6. Step 6: Final answer
    x = 12,186.13

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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.