Home / 20,562.31-28,370.01-13,855.51

Finding the Fourth Proportional to 20,562.31, 28,370.01 and 13,855.51

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Solution

The fourth proportional to 20,562.31, 28,370.01 and 13,855.51 is: 19,116.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.31 : 28,370.01 = 13,855.51 : x
  2. Step 2: Convert to fraction form
    20,562.31/28,370.01 = 13,855.51/x
  3. Step 3: Cross multiply
    20,562.31x = 28,370.01 × 13,855.51
  4. Step 4: Simplify right side
    20,562.31x = 393,080,957.26
  5. Step 5: Solve for x
    x = 393,080,957.26/20,562.31
  6. Step 6: Final answer
    x = 19,116.58

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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.