Home / 13,578.85-18,738.90-7,610.77

Finding the Fourth Proportional to 13,578.85, 18,738.90 and 7,610.77

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Solution

The fourth proportional to 13,578.85, 18,738.90 and 7,610.77 is: 10,502.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.85 : 18,738.90 = 7,610.77 : x
  2. Step 2: Convert to fraction form
    13,578.85/18,738.90 = 7,610.77/x
  3. Step 3: Cross multiply
    13,578.85x = 18,738.90 × 7,610.77
  4. Step 4: Simplify right side
    13,578.85x = 142,617,411.11
  5. Step 5: Solve for x
    x = 142,617,411.11/13,578.85
  6. Step 6: Final answer
    x = 10,502.91

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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.