Home / 28,543.42-39,405.74-17,215.78

Finding the Fourth Proportional to 28,543.42, 39,405.74 and 17,215.78

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Solution

The fourth proportional to 28,543.42, 39,405.74 and 17,215.78 is: 23,767.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.42 : 39,405.74 = 17,215.78 : x
  2. Step 2: Convert to fraction form
    28,543.42/39,405.74 = 17,215.78/x
  3. Step 3: Cross multiply
    28,543.42x = 39,405.74 × 17,215.78
  4. Step 4: Simplify right side
    28,543.42x = 678,400,550.58
  5. Step 5: Solve for x
    x = 678,400,550.58/28,543.42
  6. Step 6: Final answer
    x = 23,767.32

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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.