Home / 21,261.78-31,900.77-9,572.31

Finding the Fourth Proportional to 21,261.78, 31,900.77 and 9,572.31

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Solution

The fourth proportional to 21,261.78, 31,900.77 and 9,572.31 is: 14,362.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.78 : 31,900.77 = 9,572.31 : x
  2. Step 2: Convert to fraction form
    21,261.78/31,900.77 = 9,572.31/x
  3. Step 3: Cross multiply
    21,261.78x = 31,900.77 × 9,572.31
  4. Step 4: Simplify right side
    21,261.78x = 305,364,059.68
  5. Step 5: Solve for x
    x = 305,364,059.68/21,261.78
  6. Step 6: Final answer
    x = 14,362.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.