Home / 19,730.64-27,228.18-10,778.04

Finding the Fourth Proportional to 19,730.64, 27,228.18 and 10,778.04

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Solution

The fourth proportional to 19,730.64, 27,228.18 and 10,778.04 is: 14,873.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,730.64 : 27,228.18 = 10,778.04 : x
  2. Step 2: Convert to fraction form
    19,730.64/27,228.18 = 10,778.04/x
  3. Step 3: Cross multiply
    19,730.64x = 27,228.18 × 10,778.04
  4. Step 4: Simplify right side
    19,730.64x = 293,466,413.17
  5. Step 5: Solve for x
    x = 293,466,413.17/19,730.64
  6. Step 6: Final answer
    x = 14,873.64

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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.