Home / 21,018.22-31,526.65-8,534.55

Finding the Fourth Proportional to 21,018.22, 31,526.65 and 8,534.55

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Solution

The fourth proportional to 21,018.22, 31,526.65 and 8,534.55 is: 12,801.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.22 : 31,526.65 = 8,534.55 : x
  2. Step 2: Convert to fraction form
    21,018.22/31,526.65 = 8,534.55/x
  3. Step 3: Cross multiply
    21,018.22x = 31,526.65 × 8,534.55
  4. Step 4: Simplify right side
    21,018.22x = 269,065,770.76
  5. Step 5: Solve for x
    x = 269,065,770.76/21,018.22
  6. Step 6: Final answer
    x = 12,801.55

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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.