Home / 13,900.08-19,183.12-7,931.88

Finding the Fourth Proportional to 13,900.08, 19,183.12 and 7,931.88

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Solution

The fourth proportional to 13,900.08, 19,183.12 and 7,931.88 is: 10,946.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.08 : 19,183.12 = 7,931.88 : x
  2. Step 2: Convert to fraction form
    13,900.08/19,183.12 = 7,931.88/x
  3. Step 3: Cross multiply
    13,900.08x = 19,183.12 × 7,931.88
  4. Step 4: Simplify right side
    13,900.08x = 152,158,205.87
  5. Step 5: Solve for x
    x = 152,158,205.87/13,900.08
  6. Step 6: Final answer
    x = 10,946.57

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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.