Home / 28,961.52-39,968.28-16,386

Finding the Fourth Proportional to 28,961.52, 39,968.28 and 16,386

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Solution

The fourth proportional to 28,961.52, 39,968.28 and 16,386 is: 22,613.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,961.52 : 39,968.28 = 16,386 : x
  2. Step 2: Convert to fraction form
    28,961.52/39,968.28 = 16,386/x
  3. Step 3: Cross multiply
    28,961.52x = 39,968.28 × 16,386
  4. Step 4: Simplify right side
    28,961.52x = 654,920,236.08
  5. Step 5: Solve for x
    x = 654,920,236.08/28,961.52
  6. Step 6: Final answer
    x = 22,613.46

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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.