Home / 13,792.75-19,037.90-8,130.79

Finding the Fourth Proportional to 13,792.75, 19,037.90 and 8,130.79

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Solution

The fourth proportional to 13,792.75, 19,037.90 and 8,130.79 is: 11,222.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,792.75 : 19,037.90 = 8,130.79 : x
  2. Step 2: Convert to fraction form
    13,792.75/19,037.90 = 8,130.79/x
  3. Step 3: Cross multiply
    13,792.75x = 19,037.90 × 8,130.79
  4. Step 4: Simplify right side
    13,792.75x = 154,793,031.10
  5. Step 5: Solve for x
    x = 154,793,031.10/13,792.75
  6. Step 6: Final answer
    x = 11,222.79

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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.