Home / 21,886.96-30,204.76-12,455.32

Finding the Fourth Proportional to 21,886.96, 30,204.76 and 12,455.32

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Solution

The fourth proportional to 21,886.96, 30,204.76 and 12,455.32 is: 17,188.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,886.96 : 30,204.76 = 12,455.32 : x
  2. Step 2: Convert to fraction form
    21,886.96/30,204.76 = 12,455.32/x
  3. Step 3: Cross multiply
    21,886.96x = 30,204.76 × 12,455.32
  4. Step 4: Simplify right side
    21,886.96x = 376,209,951.32
  5. Step 5: Solve for x
    x = 376,209,951.32/21,886.96
  6. Step 6: Final answer
    x = 17,188.77

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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.