Home / 28,142.31-38,819.46-18,582.28

Finding the Fourth Proportional to 28,142.31, 38,819.46 and 18,582.28

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Solution

The fourth proportional to 28,142.31, 38,819.46 and 18,582.28 is: 25,632.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.31 : 38,819.46 = 18,582.28 : x
  2. Step 2: Convert to fraction form
    28,142.31/38,819.46 = 18,582.28/x
  3. Step 3: Cross multiply
    28,142.31x = 38,819.46 × 18,582.28
  4. Step 4: Simplify right side
    28,142.31x = 721,354,075.17
  5. Step 5: Solve for x
    x = 721,354,075.17/28,142.31
  6. Step 6: Final answer
    x = 25,632.37

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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.