Home / 69,029.09-103,543.74-20,998.12

Finding the Fourth Proportional to 69,029.09, 103,543.74 and 20,998.12

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Solution

The fourth proportional to 69,029.09, 103,543.74 and 20,998.12 is: 31,497.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,029.09 : 103,543.74 = 20,998.12 : x
  2. Step 2: Convert to fraction form
    69,029.09/103,543.74 = 20,998.12/x
  3. Step 3: Cross multiply
    69,029.09x = 103,543.74 × 20,998.12
  4. Step 4: Simplify right side
    69,029.09x = 2,174,223,877.77
  5. Step 5: Solve for x
    x = 2,174,223,877.77/69,029.09
  6. Step 6: Final answer
    x = 31,497.21

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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.