Home / 10,981.12-16,477.08-5,138.16

Finding the Fourth Proportional to 10,981.12, 16,477.08 and 5,138.16

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Solution

The fourth proportional to 10,981.12, 16,477.08 and 5,138.16 is: 7,709.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,981.12 : 16,477.08 = 5,138.16 : x
  2. Step 2: Convert to fraction form
    10,981.12/16,477.08 = 5,138.16/x
  3. Step 3: Cross multiply
    10,981.12x = 16,477.08 × 5,138.16
  4. Step 4: Simplify right side
    10,981.12x = 84,661,873.37
  5. Step 5: Solve for x
    x = 84,661,873.37/10,981.12
  6. Step 6: Final answer
    x = 7,709.77

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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.