Home / 27,619.68-38,116.32-15,045.12

Finding the Fourth Proportional to 27,619.68, 38,116.32 and 15,045.12

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Solution

The fourth proportional to 27,619.68, 38,116.32 and 15,045.12 is: 20,762.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,619.68 : 38,116.32 = 15,045.12 : x
  2. Step 2: Convert to fraction form
    27,619.68/38,116.32 = 15,045.12/x
  3. Step 3: Cross multiply
    27,619.68x = 38,116.32 × 15,045.12
  4. Step 4: Simplify right side
    27,619.68x = 573,464,608.36
  5. Step 5: Solve for x
    x = 573,464,608.36/27,619.68
  6. Step 6: Final answer
    x = 20,762.90

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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.