Home / 15,859.44-21,886.20-8,785.98

Finding the Fourth Proportional to 15,859.44, 21,886.20 and 8,785.98

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Solution

The fourth proportional to 15,859.44, 21,886.20 and 8,785.98 is: 12,124.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,859.44 : 21,886.20 = 8,785.98 : x
  2. Step 2: Convert to fraction form
    15,859.44/21,886.20 = 8,785.98/x
  3. Step 3: Cross multiply
    15,859.44x = 21,886.20 × 8,785.98
  4. Step 4: Simplify right side
    15,859.44x = 192,291,715.48
  5. Step 5: Solve for x
    x = 192,291,715.48/15,859.44
  6. Step 6: Final answer
    x = 12,124.75

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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.