Home / 10,855.76-14,981.16-6,140.24

Finding the Fourth Proportional to 10,855.76, 14,981.16 and 6,140.24

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Solution

The fourth proportional to 10,855.76, 14,981.16 and 6,140.24 is: 8,473.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,855.76 : 14,981.16 = 6,140.24 : x
  2. Step 2: Convert to fraction form
    10,855.76/14,981.16 = 6,140.24/x
  3. Step 3: Cross multiply
    10,855.76x = 14,981.16 × 6,140.24
  4. Step 4: Simplify right side
    10,855.76x = 91,987,917.88
  5. Step 5: Solve for x
    x = 91,987,917.88/10,855.76
  6. Step 6: Final answer
    x = 8,473.65

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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.