Home / 15,317.30-21,137.86-8,948.27

Finding the Fourth Proportional to 15,317.30, 21,137.86 and 8,948.27

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Solution

The fourth proportional to 15,317.30, 21,137.86 and 8,948.27 is: 12,348.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,317.30 : 21,137.86 = 8,948.27 : x
  2. Step 2: Convert to fraction form
    15,317.30/21,137.86 = 8,948.27/x
  3. Step 3: Cross multiply
    15,317.30x = 21,137.86 × 8,948.27
  4. Step 4: Simplify right side
    15,317.30x = 189,147,342.53
  5. Step 5: Solve for x
    x = 189,147,342.53/15,317.30
  6. Step 6: Final answer
    x = 12,348.61

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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.