Home / 38,982.36-53,798.80-21,985.72

Finding the Fourth Proportional to 38,982.36, 53,798.80 and 21,985.72

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Solution

The fourth proportional to 38,982.36, 53,798.80 and 21,985.72 is: 30,342.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,982.36 : 53,798.80 = 21,985.72 : x
  2. Step 2: Convert to fraction form
    38,982.36/53,798.80 = 21,985.72/x
  3. Step 3: Cross multiply
    38,982.36x = 53,798.80 × 21,985.72
  4. Step 4: Simplify right side
    38,982.36x = 1,182,805,353.14
  5. Step 5: Solve for x
    x = 1,182,805,353.14/38,982.36
  6. Step 6: Final answer
    x = 30,342.07

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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.