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Finding the Fourth Proportional to 15,701.33, 21,669.04 and 8,989.06

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Solution

The fourth proportional to 15,701.33, 21,669.04 and 8,989.06 is: 12,405.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.33 : 21,669.04 = 8,989.06 : x
  2. Step 2: Convert to fraction form
    15,701.33/21,669.04 = 8,989.06/x
  3. Step 3: Cross multiply
    15,701.33x = 21,669.04 × 8,989.06
  4. Step 4: Simplify right side
    15,701.33x = 194,784,300.70
  5. Step 5: Solve for x
    x = 194,784,300.70/15,701.33
  6. Step 6: Final answer
    x = 12,405.59

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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.