Home / 38,639.22-53,321.40-21,643.26

Finding the Fourth Proportional to 38,639.22, 53,321.40 and 21,643.26

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Solution

The fourth proportional to 38,639.22, 53,321.40 and 21,643.26 is: 29,867.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639.22 : 53,321.40 = 21,643.26 : x
  2. Step 2: Convert to fraction form
    38,639.22/53,321.40 = 21,643.26/x
  3. Step 3: Cross multiply
    38,639.22x = 53,321.40 × 21,643.26
  4. Step 4: Simplify right side
    38,639.22x = 1,154,048,923.76
  5. Step 5: Solve for x
    x = 1,154,048,923.76/38,639.22
  6. Step 6: Final answer
    x = 29,867.29

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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.