Home / 27,129.60-40,669.92-13,965.12

Finding the Fourth Proportional to 27,129.60, 40,669.92 and 13,965.12

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Solution

The fourth proportional to 27,129.60, 40,669.92 and 13,965.12 is: 20,935.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,129.60 : 40,669.92 = 13,965.12 : x
  2. Step 2: Convert to fraction form
    27,129.60/40,669.92 = 13,965.12/x
  3. Step 3: Cross multiply
    27,129.60x = 40,669.92 × 13,965.12
  4. Step 4: Simplify right side
    27,129.60x = 567,960,313.19
  5. Step 5: Solve for x
    x = 567,960,313.19/27,129.60
  6. Step 6: Final answer
    x = 20,935.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.