Home / 38,931.44-53,721.02-21,935.31

Finding the Fourth Proportional to 38,931.44, 53,721.02 and 21,935.31

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Solution

The fourth proportional to 38,931.44, 53,721.02 and 21,935.31 is: 30,268.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,931.44 : 53,721.02 = 21,935.31 : x
  2. Step 2: Convert to fraction form
    38,931.44/53,721.02 = 21,935.31/x
  3. Step 3: Cross multiply
    38,931.44x = 53,721.02 × 21,935.31
  4. Step 4: Simplify right side
    38,931.44x = 1,178,387,080.60
  5. Step 5: Solve for x
    x = 1,178,387,080.60/38,931.44
  6. Step 6: Final answer
    x = 30,268.27

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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.