Home / 15,447.21-21,317.30-8,373.61

Finding the Fourth Proportional to 15,447.21, 21,317.30 and 8,373.61

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Solution

The fourth proportional to 15,447.21, 21,317.30 and 8,373.61 is: 11,555.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.21 : 21,317.30 = 8,373.61 : x
  2. Step 2: Convert to fraction form
    15,447.21/21,317.30 = 8,373.61/x
  3. Step 3: Cross multiply
    15,447.21x = 21,317.30 × 8,373.61
  4. Step 4: Simplify right side
    15,447.21x = 178,502,756.45
  5. Step 5: Solve for x
    x = 178,502,756.45/15,447.21
  6. Step 6: Final answer
    x = 11,555.66

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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.