Home / 28,725.16-39,613.98-18,642.82

Finding the Fourth Proportional to 28,725.16, 39,613.98 and 18,642.82

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Solution

The fourth proportional to 28,725.16, 39,613.98 and 18,642.82 is: 25,709.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,725.16 : 39,613.98 = 18,642.82 : x
  2. Step 2: Convert to fraction form
    28,725.16/39,613.98 = 18,642.82/x
  3. Step 3: Cross multiply
    28,725.16x = 39,613.98 × 18,642.82
  4. Step 4: Simplify right side
    28,725.16x = 738,516,298.62
  5. Step 5: Solve for x
    x = 738,516,298.62/28,725.16
  6. Step 6: Final answer
    x = 25,709.74

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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.