Home / 13,897.20-20,732.10-11,953.20

Finding the Fourth Proportional to 13,897.20, 20,732.10 and 11,953.20

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Solution

The fourth proportional to 13,897.20, 20,732.10 and 11,953.20 is: 17,832.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,897.20 : 20,732.10 = 11,953.20 : x
  2. Step 2: Convert to fraction form
    13,897.20/20,732.10 = 11,953.20/x
  3. Step 3: Cross multiply
    13,897.20x = 20,732.10 × 11,953.20
  4. Step 4: Simplify right side
    13,897.20x = 247,814,937.72
  5. Step 5: Solve for x
    x = 247,814,937.72/13,897.20
  6. Step 6: Final answer
    x = 17,832.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.