Home / 15,429.16-21,297.68-9,379.48

Finding the Fourth Proportional to 15,429.16, 21,297.68 and 9,379.48

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Solution

The fourth proportional to 15,429.16, 21,297.68 and 9,379.48 is: 12,946.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429.16 : 21,297.68 = 9,379.48 : x
  2. Step 2: Convert to fraction form
    15,429.16/21,297.68 = 9,379.48/x
  3. Step 3: Cross multiply
    15,429.16x = 21,297.68 × 9,379.48
  4. Step 4: Simplify right side
    15,429.16x = 199,761,163.61
  5. Step 5: Solve for x
    x = 199,761,163.61/15,429.16
  6. Step 6: Final answer
    x = 12,946.99

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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.