Home / 20,129.68-27,795.52-13,068.16

Finding the Fourth Proportional to 20,129.68, 27,795.52 and 13,068.16

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Solution

The fourth proportional to 20,129.68, 27,795.52 and 13,068.16 is: 18,044.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,129.68 : 27,795.52 = 13,068.16 : x
  2. Step 2: Convert to fraction form
    20,129.68/27,795.52 = 13,068.16/x
  3. Step 3: Cross multiply
    20,129.68x = 27,795.52 × 13,068.16
  4. Step 4: Simplify right side
    20,129.68x = 363,236,302.64
  5. Step 5: Solve for x
    x = 363,236,302.64/20,129.68
  6. Step 6: Final answer
    x = 18,044.81

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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.