Home / 21,319.07-31,977.18-8,835.89

Finding the Fourth Proportional to 21,319.07, 31,977.18 and 8,835.89

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Solution

The fourth proportional to 21,319.07, 31,977.18 and 8,835.89 is: 13,253.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,319.07 : 31,977.18 = 8,835.89 : x
  2. Step 2: Convert to fraction form
    21,319.07/31,977.18 = 8,835.89/x
  3. Step 3: Cross multiply
    21,319.07x = 31,977.18 × 8,835.89
  4. Step 4: Simplify right side
    21,319.07x = 282,546,685.10
  5. Step 5: Solve for x
    x = 282,546,685.10/21,319.07
  6. Step 6: Final answer
    x = 13,253.24

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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.