Home / 15,319.98-21,142.71-8,606.22

Finding the Fourth Proportional to 15,319.98, 21,142.71 and 8,606.22

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Solution

The fourth proportional to 15,319.98, 21,142.71 and 8,606.22 is: 11,877.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.98 : 21,142.71 = 8,606.22 : x
  2. Step 2: Convert to fraction form
    15,319.98/21,142.71 = 8,606.22/x
  3. Step 3: Cross multiply
    15,319.98x = 21,142.71 × 8,606.22
  4. Step 4: Simplify right side
    15,319.98x = 181,958,813.66
  5. Step 5: Solve for x
    x = 181,958,813.66/15,319.98
  6. Step 6: Final answer
    x = 11,877.22

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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.