Home / 21,060.42-31,563.23-8,565.87

Finding the Fourth Proportional to 21,060.42, 31,563.23 and 8,565.87

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Solution

The fourth proportional to 21,060.42, 31,563.23 and 8,565.87 is: 12,837.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.42 : 31,563.23 = 8,565.87 : x
  2. Step 2: Convert to fraction form
    21,060.42/31,563.23 = 8,565.87/x
  3. Step 3: Cross multiply
    21,060.42x = 31,563.23 × 8,565.87
  4. Step 4: Simplify right side
    21,060.42x = 270,366,482.13
  5. Step 5: Solve for x
    x = 270,366,482.13/21,060.42
  6. Step 6: Final answer
    x = 12,837.66

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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.