Home / 21,060.45-31,563.36-8,565.93

Finding the Fourth Proportional to 21,060.45, 31,563.36 and 8,565.93

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Solution

The fourth proportional to 21,060.45, 31,563.36 and 8,565.93 is: 12,837.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.45 : 31,563.36 = 8,565.93 : x
  2. Step 2: Convert to fraction form
    21,060.45/31,563.36 = 8,565.93/x
  3. Step 3: Cross multiply
    21,060.45x = 31,563.36 × 8,565.93
  4. Step 4: Simplify right side
    21,060.45x = 270,369,532.32
  5. Step 5: Solve for x
    x = 270,369,532.32/21,060.45
  6. Step 6: Final answer
    x = 12,837.79

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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.