Home / 19,151.40-28,743.30-8,637.60

Finding the Fourth Proportional to 19,151.40, 28,743.30 and 8,637.60

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Solution

The fourth proportional to 19,151.40, 28,743.30 and 8,637.60 is: 12,963.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,151.40 : 28,743.30 = 8,637.60 : x
  2. Step 2: Convert to fraction form
    19,151.40/28,743.30 = 8,637.60/x
  3. Step 3: Cross multiply
    19,151.40x = 28,743.30 × 8,637.60
  4. Step 4: Simplify right side
    19,151.40x = 248,273,128.08
  5. Step 5: Solve for x
    x = 248,273,128.08/19,151.40
  6. Step 6: Final answer
    x = 12,963.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.