Home / 28,111.22-38,795.92-15,538.40

Finding the Fourth Proportional to 28,111.22, 38,795.92 and 15,538.40

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Solution

The fourth proportional to 28,111.22, 38,795.92 and 15,538.40 is: 21,444.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.22 : 38,795.92 = 15,538.40 : x
  2. Step 2: Convert to fraction form
    28,111.22/38,795.92 = 15,538.40/x
  3. Step 3: Cross multiply
    28,111.22x = 38,795.92 × 15,538.40
  4. Step 4: Simplify right side
    28,111.22x = 602,826,523.33
  5. Step 5: Solve for x
    x = 602,826,523.33/28,111.22
  6. Step 6: Final answer
    x = 21,444.34

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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.