Home / 21,887.01-30,204.08-12,455.57

Finding the Fourth Proportional to 21,887.01, 30,204.08 and 12,455.57

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Solution

The fourth proportional to 21,887.01, 30,204.08 and 12,455.57 is: 17,188.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,887.01 : 30,204.08 = 12,455.57 : x
  2. Step 2: Convert to fraction form
    21,887.01/30,204.08 = 12,455.57/x
  3. Step 3: Cross multiply
    21,887.01x = 30,204.08 × 12,455.57
  4. Step 4: Simplify right side
    21,887.01x = 376,209,032.73
  5. Step 5: Solve for x
    x = 376,209,032.73/21,887.01
  6. Step 6: Final answer
    x = 17,188.69

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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.