Home / 21,522.31-29,688.80-20,000.07

Finding the Fourth Proportional to 21,522.31, 29,688.80 and 20,000.07

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Solution

The fourth proportional to 21,522.31, 29,688.80 and 20,000.07 is: 27,588.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,522.31 : 29,688.80 = 20,000.07 : x
  2. Step 2: Convert to fraction form
    21,522.31/29,688.80 = 20,000.07/x
  3. Step 3: Cross multiply
    21,522.31x = 29,688.80 × 20,000.07
  4. Step 4: Simplify right side
    21,522.31x = 593,778,078.22
  5. Step 5: Solve for x
    x = 593,778,078.22/21,522.31
  6. Step 6: Final answer
    x = 27,588.96

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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.