Home / 12,613.37-17,280.40-12,140.43

Finding the Fourth Proportional to 12,613.37, 17,280.40 and 12,140.43

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Solution

The fourth proportional to 12,613.37, 17,280.40 and 12,140.43 is: 16,632.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.37 : 17,280.40 = 12,140.43 : x
  2. Step 2: Convert to fraction form
    12,613.37/17,280.40 = 12,140.43/x
  3. Step 3: Cross multiply
    12,613.37x = 17,280.40 × 12,140.43
  4. Step 4: Simplify right side
    12,613.37x = 209,791,486.57
  5. Step 5: Solve for x
    x = 209,791,486.57/12,613.37
  6. Step 6: Final answer
    x = 16,632.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.