Home / 38,980.36-53,796.04-21,983.72

Finding the Fourth Proportional to 38,980.36, 53,796.04 and 21,983.72

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Solution

The fourth proportional to 38,980.36, 53,796.04 and 21,983.72 is: 30,339.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,980.36 : 53,796.04 = 21,983.72 : x
  2. Step 2: Convert to fraction form
    38,980.36/53,796.04 = 21,983.72/x
  3. Step 3: Cross multiply
    38,980.36x = 53,796.04 × 21,983.72
  4. Step 4: Simplify right side
    38,980.36x = 1,182,637,080.47
  5. Step 5: Solve for x
    x = 1,182,637,080.47/38,980.36
  6. Step 6: Final answer
    x = 30,339.31

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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.