Home / 15,347.15-21,173.06-8,631.23

Finding the Fourth Proportional to 15,347.15, 21,173.06 and 8,631.23

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Solution

The fourth proportional to 15,347.15, 21,173.06 and 8,631.23 is: 11,907.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.15 : 21,173.06 = 8,631.23 : x
  2. Step 2: Convert to fraction form
    15,347.15/21,173.06 = 8,631.23/x
  3. Step 3: Cross multiply
    15,347.15x = 21,173.06 × 8,631.23
  4. Step 4: Simplify right side
    15,347.15x = 182,749,550.66
  5. Step 5: Solve for x
    x = 182,749,550.66/15,347.15
  6. Step 6: Final answer
    x = 11,907.72

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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.