Home / 21,347.29-31,999.05-8,874.55

Finding the Fourth Proportional to 21,347.29, 31,999.05 and 8,874.55

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Solution

The fourth proportional to 21,347.29, 31,999.05 and 8,874.55 is: 13,302.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.29 : 31,999.05 = 8,874.55 : x
  2. Step 2: Convert to fraction form
    21,347.29/31,999.05 = 8,874.55/x
  3. Step 3: Cross multiply
    21,347.29x = 31,999.05 × 8,874.55
  4. Step 4: Simplify right side
    21,347.29x = 283,977,009.18
  5. Step 5: Solve for x
    x = 283,977,009.18/21,347.29
  6. Step 6: Final answer
    x = 13,302.72

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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.