Home / 12,515.77-18,782.91-10,079.99

Finding the Fourth Proportional to 12,515.77, 18,782.91 and 10,079.99

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Solution

The fourth proportional to 12,515.77, 18,782.91 and 10,079.99 is: 15,127.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.77 : 18,782.91 = 10,079.99 : x
  2. Step 2: Convert to fraction form
    12,515.77/18,782.91 = 10,079.99/x
  3. Step 3: Cross multiply
    12,515.77x = 18,782.91 × 10,079.99
  4. Step 4: Simplify right side
    12,515.77x = 189,331,494.57
  5. Step 5: Solve for x
    x = 189,331,494.57/12,515.77
  6. Step 6: Final answer
    x = 15,127.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.