Home / 21,222.48-31,840.08-8,565.72

Finding the Fourth Proportional to 21,222.48, 31,840.08 and 8,565.72

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Solution

The fourth proportional to 21,222.48, 31,840.08 and 8,565.72 is: 12,851.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.48 : 31,840.08 = 8,565.72 : x
  2. Step 2: Convert to fraction form
    21,222.48/31,840.08 = 8,565.72/x
  3. Step 3: Cross multiply
    21,222.48x = 31,840.08 × 8,565.72
  4. Step 4: Simplify right side
    21,222.48x = 272,733,268.60
  5. Step 5: Solve for x
    x = 272,733,268.60/21,222.48
  6. Step 6: Final answer
    x = 12,851.15

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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.