Home / 38,428.64-53,032.56-21,665.60

Finding the Fourth Proportional to 38,428.64, 53,032.56 and 21,665.60

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Solution

The fourth proportional to 38,428.64, 53,032.56 and 21,665.60 is: 29,899.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,428.64 : 53,032.56 = 21,665.60 : x
  2. Step 2: Convert to fraction form
    38,428.64/53,032.56 = 21,665.60/x
  3. Step 3: Cross multiply
    38,428.64x = 53,032.56 × 21,665.60
  4. Step 4: Simplify right side
    38,428.64x = 1,148,982,231.94
  5. Step 5: Solve for x
    x = 1,148,982,231.94/38,428.64
  6. Step 6: Final answer
    x = 29,899.11

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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.