Home / 13,730.48-18,947.85-7,761.94

Finding the Fourth Proportional to 13,730.48, 18,947.85 and 7,761.94

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Solution

The fourth proportional to 13,730.48, 18,947.85 and 7,761.94 is: 10,711.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.48 : 18,947.85 = 7,761.94 : x
  2. Step 2: Convert to fraction form
    13,730.48/18,947.85 = 7,761.94/x
  3. Step 3: Cross multiply
    13,730.48x = 18,947.85 × 7,761.94
  4. Step 4: Simplify right side
    13,730.48x = 147,072,074.83
  5. Step 5: Solve for x
    x = 147,072,074.83/13,730.48
  6. Step 6: Final answer
    x = 10,711.36

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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.