Home / 36,060.40-54,090.60-12,689.20

Finding the Fourth Proportional to 36,060.40, 54,090.60 and 12,689.20

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Solution

The fourth proportional to 36,060.40, 54,090.60 and 12,689.20 is: 19,033.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,060.40 : 54,090.60 = 12,689.20 : x
  2. Step 2: Convert to fraction form
    36,060.40/54,090.60 = 12,689.20/x
  3. Step 3: Cross multiply
    36,060.40x = 54,090.60 × 12,689.20
  4. Step 4: Simplify right side
    36,060.40x = 686,366,441.52
  5. Step 5: Solve for x
    x = 686,366,441.52/36,060.40
  6. Step 6: Final answer
    x = 19,033.80

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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.