Home / 27,752.09-38,302.40-20,629.30

Finding the Fourth Proportional to 27,752.09, 38,302.40 and 20,629.30

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Solution

The fourth proportional to 27,752.09, 38,302.40 and 20,629.30 is: 28,471.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,752.09 : 38,302.40 = 20,629.30 : x
  2. Step 2: Convert to fraction form
    27,752.09/38,302.40 = 20,629.30/x
  3. Step 3: Cross multiply
    27,752.09x = 38,302.40 × 20,629.30
  4. Step 4: Simplify right side
    27,752.09x = 790,151,700.32
  5. Step 5: Solve for x
    x = 790,151,700.32/27,752.09
  6. Step 6: Final answer
    x = 28,471.79

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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.