Home / 38,431.04-53,034.36-21,664.04

Finding the Fourth Proportional to 38,431.04, 53,034.36 and 21,664.04

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Solution

The fourth proportional to 38,431.04, 53,034.36 and 21,664.04 is: 29,896.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,431.04 : 53,034.36 = 21,664.04 : x
  2. Step 2: Convert to fraction form
    38,431.04/53,034.36 = 21,664.04/x
  3. Step 3: Cross multiply
    38,431.04x = 53,034.36 × 21,664.04
  4. Step 4: Simplify right side
    38,431.04x = 1,148,938,496.41
  5. Step 5: Solve for x
    x = 1,148,938,496.41/38,431.04
  6. Step 6: Final answer
    x = 29,896.11

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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.