Home / 13,068.48-18,033.60-7,761.12

Finding the Fourth Proportional to 13,068.48, 18,033.60 and 7,761.12

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Solution

The fourth proportional to 13,068.48, 18,033.60 and 7,761.12 is: 10,709.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,068.48 : 18,033.60 = 7,761.12 : x
  2. Step 2: Convert to fraction form
    13,068.48/18,033.60 = 7,761.12/x
  3. Step 3: Cross multiply
    13,068.48x = 18,033.60 × 7,761.12
  4. Step 4: Simplify right side
    13,068.48x = 139,960,933.63
  5. Step 5: Solve for x
    x = 139,960,933.63/13,068.48
  6. Step 6: Final answer
    x = 10,709.81

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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.