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Finding the Fourth Proportional to 10,855.58, 14,987.43 and 8,332.86

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Solution

The fourth proportional to 10,855.58, 14,987.43 and 8,332.86 is: 11,504.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,855.58 : 14,987.43 = 8,332.86 : x
  2. Step 2: Convert to fraction form
    10,855.58/14,987.43 = 8,332.86/x
  3. Step 3: Cross multiply
    10,855.58x = 14,987.43 × 8,332.86
  4. Step 4: Simplify right side
    10,855.58x = 124,888,155.95
  5. Step 5: Solve for x
    x = 124,888,155.95/10,855.58
  6. Step 6: Final answer
    x = 11,504.52

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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.