Home / 35,677.90-53,480.40-20,879.20

Finding the Fourth Proportional to 35,677.90, 53,480.40 and 20,879.20

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Solution

The fourth proportional to 35,677.90, 53,480.40 and 20,879.20 is: 31,297.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,677.90 : 53,480.40 = 20,879.20 : x
  2. Step 2: Convert to fraction form
    35,677.90/53,480.40 = 20,879.20/x
  3. Step 3: Cross multiply
    35,677.90x = 53,480.40 × 20,879.20
  4. Step 4: Simplify right side
    35,677.90x = 1,116,627,967.68
  5. Step 5: Solve for x
    x = 1,116,627,967.68/35,677.90
  6. Step 6: Final answer
    x = 31,297.47

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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.