Home / 38,530.74-53,171.73-21,535.32

Finding the Fourth Proportional to 38,530.74, 53,171.73 and 21,535.32

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Solution

The fourth proportional to 38,530.74, 53,171.73 and 21,535.32 is: 29,718.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,530.74 : 53,171.73 = 21,535.32 : x
  2. Step 2: Convert to fraction form
    38,530.74/53,171.73 = 21,535.32/x
  3. Step 3: Cross multiply
    38,530.74x = 53,171.73 × 21,535.32
  4. Step 4: Simplify right side
    38,530.74x = 1,145,070,220.50
  5. Step 5: Solve for x
    x = 1,145,070,220.50/38,530.74
  6. Step 6: Final answer
    x = 29,718.36

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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.