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Finding the Fourth Proportional to 15,014.98, 20,717.88 and 9,638.41

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Solution

The fourth proportional to 15,014.98, 20,717.88 and 9,638.41 is: 13,299.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.98 : 20,717.88 = 9,638.41 : x
  2. Step 2: Convert to fraction form
    15,014.98/20,717.88 = 9,638.41/x
  3. Step 3: Cross multiply
    15,014.98x = 20,717.88 × 9,638.41
  4. Step 4: Simplify right side
    15,014.98x = 199,687,421.77
  5. Step 5: Solve for x
    x = 199,687,421.77/15,014.98
  6. Step 6: Final answer
    x = 13,299.21

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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.