Home / 13,015.71-19,515.63-5,108.76

Finding the Fourth Proportional to 13,015.71, 19,515.63 and 5,108.76

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Solution

The fourth proportional to 13,015.71, 19,515.63 and 5,108.76 is: 7,660.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.71 : 19,515.63 = 5,108.76 : x
  2. Step 2: Convert to fraction form
    13,015.71/19,515.63 = 5,108.76/x
  3. Step 3: Cross multiply
    13,015.71x = 19,515.63 × 5,108.76
  4. Step 4: Simplify right side
    13,015.71x = 99,700,669.92
  5. Step 5: Solve for x
    x = 99,700,669.92/13,015.71
  6. Step 6: Final answer
    x = 7,660.03

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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.