Home / 21,589.12-29,793.44-13,091.52

Finding the Fourth Proportional to 21,589.12, 29,793.44 and 13,091.52

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Solution

The fourth proportional to 21,589.12, 29,793.44 and 13,091.52 is: 18,066.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,589.12 : 29,793.44 = 13,091.52 : x
  2. Step 2: Convert to fraction form
    21,589.12/29,793.44 = 13,091.52/x
  3. Step 3: Cross multiply
    21,589.12x = 29,793.44 × 13,091.52
  4. Step 4: Simplify right side
    21,589.12x = 390,041,415.63
  5. Step 5: Solve for x
    x = 390,041,415.63/21,589.12
  6. Step 6: Final answer
    x = 18,066.57

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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.