Home / 21,058.45-31,560.36-8,563.93

Finding the Fourth Proportional to 21,058.45, 31,560.36 and 8,563.93

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Solution

The fourth proportional to 21,058.45, 31,560.36 and 8,563.93 is: 12,834.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.45 : 31,560.36 = 8,563.93 : x
  2. Step 2: Convert to fraction form
    21,058.45/31,560.36 = 8,563.93/x
  3. Step 3: Cross multiply
    21,058.45x = 31,560.36 × 8,563.93
  4. Step 4: Simplify right side
    21,058.45x = 270,280,713.81
  5. Step 5: Solve for x
    x = 270,280,713.81/21,058.45
  6. Step 6: Final answer
    x = 12,834.79

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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.