Home / 15,741.63-21,722.67-8,666.73

Finding the Fourth Proportional to 15,741.63, 21,722.67 and 8,666.73

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Solution

The fourth proportional to 15,741.63, 21,722.67 and 8,666.73 is: 11,959.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,741.63 : 21,722.67 = 8,666.73 : x
  2. Step 2: Convert to fraction form
    15,741.63/21,722.67 = 8,666.73/x
  3. Step 3: Cross multiply
    15,741.63x = 21,722.67 × 8,666.73
  4. Step 4: Simplify right side
    15,741.63x = 188,264,515.77
  5. Step 5: Solve for x
    x = 188,264,515.77/15,741.63
  6. Step 6: Final answer
    x = 11,959.66

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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.