Home / 38,985.52-53,797.96-21,989.28

Finding the Fourth Proportional to 38,985.52, 53,797.96 and 21,989.28

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Solution

The fourth proportional to 38,985.52, 53,797.96 and 21,989.28 is: 30,344.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,985.52 : 53,797.96 = 21,989.28 : x
  2. Step 2: Convert to fraction form
    38,985.52/53,797.96 = 21,989.28/x
  3. Step 3: Cross multiply
    38,985.52x = 53,797.96 × 21,989.28
  4. Step 4: Simplify right side
    38,985.52x = 1,182,978,405.87
  5. Step 5: Solve for x
    x = 1,182,978,405.87/38,985.52
  6. Step 6: Final answer
    x = 30,344.05

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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.