Home / 15,644.63-21,589.87-8,570.59

Finding the Fourth Proportional to 15,644.63, 21,589.87 and 8,570.59

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Solution

The fourth proportional to 15,644.63, 21,589.87 and 8,570.59 is: 11,827.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,644.63 : 21,589.87 = 8,570.59 : x
  2. Step 2: Convert to fraction form
    15,644.63/21,589.87 = 8,570.59/x
  3. Step 3: Cross multiply
    15,644.63x = 21,589.87 × 8,570.59
  4. Step 4: Simplify right side
    15,644.63x = 185,037,923.92
  5. Step 5: Solve for x
    x = 185,037,923.92/15,644.63
  6. Step 6: Final answer
    x = 11,827.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.