Home / 27,739.56-38,280.82-15,802.70

Finding the Fourth Proportional to 27,739.56, 38,280.82 and 15,802.70

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Solution

The fourth proportional to 27,739.56, 38,280.82 and 15,802.70 is: 21,807.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,739.56 : 38,280.82 = 15,802.70 : x
  2. Step 2: Convert to fraction form
    27,739.56/38,280.82 = 15,802.70/x
  3. Step 3: Cross multiply
    27,739.56x = 38,280.82 × 15,802.70
  4. Step 4: Simplify right side
    27,739.56x = 604,940,314.21
  5. Step 5: Solve for x
    x = 604,940,314.21/27,739.56
  6. Step 6: Final answer
    x = 21,807.86

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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.