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Finding the Fourth Proportional to 15,957.81, 22,021.38 and 8,884.08

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Solution

The fourth proportional to 15,957.81, 22,021.38 and 8,884.08 is: 12,259.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,957.81 : 22,021.38 = 8,884.08 : x
  2. Step 2: Convert to fraction form
    15,957.81/22,021.38 = 8,884.08/x
  3. Step 3: Cross multiply
    15,957.81x = 22,021.38 × 8,884.08
  4. Step 4: Simplify right side
    15,957.81x = 195,639,701.63
  5. Step 5: Solve for x
    x = 195,639,701.63/15,957.81
  6. Step 6: Final answer
    x = 12,259.81

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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.