Home / 27,690.12-38,210.67-15,114.60

Finding the Fourth Proportional to 27,690.12, 38,210.67 and 15,114.60

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Solution

The fourth proportional to 27,690.12, 38,210.67 and 15,114.60 is: 20,857.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,690.12 : 38,210.67 = 15,114.60 : x
  2. Step 2: Convert to fraction form
    27,690.12/38,210.67 = 15,114.60/x
  3. Step 3: Cross multiply
    27,690.12x = 38,210.67 × 15,114.60
  4. Step 4: Simplify right side
    27,690.12x = 577,538,992.78
  5. Step 5: Solve for x
    x = 577,538,992.78/27,690.12
  6. Step 6: Final answer
    x = 20,857.22

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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.