Home / 13,644.66-20,346.48-11,985.57

Finding the Fourth Proportional to 13,644.66, 20,346.48 and 11,985.57

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Solution

The fourth proportional to 13,644.66, 20,346.48 and 11,985.57 is: 17,872.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.66 : 20,346.48 = 11,985.57 : x
  2. Step 2: Convert to fraction form
    13,644.66/20,346.48 = 11,985.57/x
  3. Step 3: Cross multiply
    13,644.66x = 20,346.48 × 11,985.57
  4. Step 4: Simplify right side
    13,644.66x = 243,864,160.29
  5. Step 5: Solve for x
    x = 243,864,160.29/13,644.66
  6. Step 6: Final answer
    x = 17,872.50

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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.