Home / 19,730.76-27,228.60-10,778.10

Finding the Fourth Proportional to 19,730.76, 27,228.60 and 10,778.10

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Solution

The fourth proportional to 19,730.76, 27,228.60 and 10,778.10 is: 14,873.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,730.76 : 27,228.60 = 10,778.10 : x
  2. Step 2: Convert to fraction form
    19,730.76/27,228.60 = 10,778.10/x
  3. Step 3: Cross multiply
    19,730.76x = 27,228.60 × 10,778.10
  4. Step 4: Simplify right side
    19,730.76x = 293,472,573.66
  5. Step 5: Solve for x
    x = 293,472,573.66/19,730.76
  6. Step 6: Final answer
    x = 14,873.86

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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.