Home / 28,320.32-39,078.80-22,653.02

Finding the Fourth Proportional to 28,320.32, 39,078.80 and 22,653.02

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Solution

The fourth proportional to 28,320.32, 39,078.80 and 22,653.02 is: 31,258.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.32 : 39,078.80 = 22,653.02 : x
  2. Step 2: Convert to fraction form
    28,320.32/39,078.80 = 22,653.02/x
  3. Step 3: Cross multiply
    28,320.32x = 39,078.80 × 22,653.02
  4. Step 4: Simplify right side
    28,320.32x = 885,252,529.32
  5. Step 5: Solve for x
    x = 885,252,529.32/28,320.32
  6. Step 6: Final answer
    x = 31,258.57

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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.