Home / 15,858.85-21,886.55-8,785.93

Finding the Fourth Proportional to 15,858.85, 21,886.55 and 8,785.93

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Solution

The fourth proportional to 15,858.85, 21,886.55 and 8,785.93 is: 12,125.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,858.85 : 21,886.55 = 8,785.93 : x
  2. Step 2: Convert to fraction form
    15,858.85/21,886.55 = 8,785.93/x
  3. Step 3: Cross multiply
    15,858.85x = 21,886.55 × 8,785.93
  4. Step 4: Simplify right side
    15,858.85x = 192,293,712.62
  5. Step 5: Solve for x
    x = 192,293,712.62/15,858.85
  6. Step 6: Final answer
    x = 12,125.32

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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.