Home / 35,160.16-52,761.20-12,989.12

Finding the Fourth Proportional to 35,160.16, 52,761.20 and 12,989.12

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Solution

The fourth proportional to 35,160.16, 52,761.20 and 12,989.12 is: 19,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,160.16 : 52,761.20 = 12,989.12 : x
  2. Step 2: Convert to fraction form
    35,160.16/52,761.20 = 12,989.12/x
  3. Step 3: Cross multiply
    35,160.16x = 52,761.20 × 12,989.12
  4. Step 4: Simplify right side
    35,160.16x = 685,321,558.14
  5. Step 5: Solve for x
    x = 685,321,558.14/35,160.16
  6. Step 6: Final answer
    x = 19,491.42

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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.