Home / 28,113.22-38,796.69-15,538.06

Finding the Fourth Proportional to 28,113.22, 38,796.69 and 15,538.06

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Solution

The fourth proportional to 28,113.22, 38,796.69 and 15,538.06 is: 21,442.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.22 : 38,796.69 = 15,538.06 : x
  2. Step 2: Convert to fraction form
    28,113.22/38,796.69 = 15,538.06/x
  3. Step 3: Cross multiply
    28,113.22x = 38,796.69 × 15,538.06
  4. Step 4: Simplify right side
    28,113.22x = 602,825,297.02
  5. Step 5: Solve for x
    x = 602,825,297.02/28,113.22
  6. Step 6: Final answer
    x = 21,442.77

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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.