Home / 38,640.48-53,325.86-21,643.73

Finding the Fourth Proportional to 38,640.48, 53,325.86 and 21,643.73

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Solution

The fourth proportional to 38,640.48, 53,325.86 and 21,643.73 is: 29,869.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,640.48 : 53,325.86 = 21,643.73 : x
  2. Step 2: Convert to fraction form
    38,640.48/53,325.86 = 21,643.73/x
  3. Step 3: Cross multiply
    38,640.48x = 53,325.86 × 21,643.73
  4. Step 4: Simplify right side
    38,640.48x = 1,154,170,249.23
  5. Step 5: Solve for x
    x = 1,154,170,249.23/38,640.48
  6. Step 6: Final answer
    x = 29,869.46

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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.