Home / 20,901-28,833.48-18,513.30

Finding the Fourth Proportional to 20,901, 28,833.48 and 18,513.30

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Solution

The fourth proportional to 20,901, 28,833.48 and 18,513.30 is: 25,539.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,901 : 28,833.48 = 18,513.30 : x
  2. Step 2: Convert to fraction form
    20,901/28,833.48 = 18,513.30/x
  3. Step 3: Cross multiply
    20,901x = 28,833.48 × 18,513.30
  4. Step 4: Simplify right side
    20,901x = 533,802,865.28
  5. Step 5: Solve for x
    x = 533,802,865.28/20,901
  6. Step 6: Final answer
    x = 25,539.58

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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.