Home / 28,447.74-39,235.69-18,239.74

Finding the Fourth Proportional to 28,447.74, 39,235.69 and 18,239.74

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Solution

The fourth proportional to 28,447.74, 39,235.69 and 18,239.74 is: 25,156.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.74 : 39,235.69 = 18,239.74 : x
  2. Step 2: Convert to fraction form
    28,447.74/39,235.69 = 18,239.74/x
  3. Step 3: Cross multiply
    28,447.74x = 39,235.69 × 18,239.74
  4. Step 4: Simplify right side
    28,447.74x = 715,648,784.32
  5. Step 5: Solve for x
    x = 715,648,784.32/28,447.74
  6. Step 6: Final answer
    x = 25,156.61

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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.