Home / 21,018.22-31,500.08-8,523.66

Finding the Fourth Proportional to 21,018.22, 31,500.08 and 8,523.66

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Solution

The fourth proportional to 21,018.22, 31,500.08 and 8,523.66 is: 12,774.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018.22 : 31,500.08 = 8,523.66 : x
  2. Step 2: Convert to fraction form
    21,018.22/31,500.08 = 8,523.66/x
  3. Step 3: Cross multiply
    21,018.22x = 31,500.08 × 8,523.66
  4. Step 4: Simplify right side
    21,018.22x = 268,495,971.89
  5. Step 5: Solve for x
    x = 268,495,971.89/21,018.22
  6. Step 6: Final answer
    x = 12,774.44

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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.