Home / 13,885.48-19,161.87-7,512.05

Finding the Fourth Proportional to 13,885.48, 19,161.87 and 7,512.05

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Solution

The fourth proportional to 13,885.48, 19,161.87 and 7,512.05 is: 10,366.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.48 : 19,161.87 = 7,512.05 : x
  2. Step 2: Convert to fraction form
    13,885.48/19,161.87 = 7,512.05/x
  3. Step 3: Cross multiply
    13,885.48x = 19,161.87 × 7,512.05
  4. Step 4: Simplify right side
    13,885.48x = 143,944,900.87
  5. Step 5: Solve for x
    x = 143,944,900.87/13,885.48
  6. Step 6: Final answer
    x = 10,366.58

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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.