Home / 14,722.72-20,323.99-9,689.58

Finding the Fourth Proportional to 14,722.72, 20,323.99 and 9,689.58

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Solution

The fourth proportional to 14,722.72, 20,323.99 and 9,689.58 is: 13,375.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,722.72 : 20,323.99 = 9,689.58 : x
  2. Step 2: Convert to fraction form
    14,722.72/20,323.99 = 9,689.58/x
  3. Step 3: Cross multiply
    14,722.72x = 20,323.99 × 9,689.58
  4. Step 4: Simplify right side
    14,722.72x = 196,930,953.61
  5. Step 5: Solve for x
    x = 196,930,953.61/14,722.72
  6. Step 6: Final answer
    x = 13,375.99

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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.