Home / 28,671.32-39,508.08-21,956.96

Finding the Fourth Proportional to 28,671.32, 39,508.08 and 21,956.96

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Solution

The fourth proportional to 28,671.32, 39,508.08 and 21,956.96 is: 30,255.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,671.32 : 39,508.08 = 21,956.96 : x
  2. Step 2: Convert to fraction form
    28,671.32/39,508.08 = 21,956.96/x
  3. Step 3: Cross multiply
    28,671.32x = 39,508.08 × 21,956.96
  4. Step 4: Simplify right side
    28,671.32x = 867,477,332.24
  5. Step 5: Solve for x
    x = 867,477,332.24/28,671.32
  6. Step 6: Final answer
    x = 30,255.93

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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.