Home / 13,147.38-18,136.64-8,898.59

Finding the Fourth Proportional to 13,147.38, 18,136.64 and 8,898.59

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Solution

The fourth proportional to 13,147.38, 18,136.64 and 8,898.59 is: 12,275.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.38 : 18,136.64 = 8,898.59 : x
  2. Step 2: Convert to fraction form
    13,147.38/18,136.64 = 8,898.59/x
  3. Step 3: Cross multiply
    13,147.38x = 18,136.64 × 8,898.59
  4. Step 4: Simplify right side
    13,147.38x = 161,390,590.93
  5. Step 5: Solve for x
    x = 161,390,590.93/13,147.38
  6. Step 6: Final answer
    x = 12,275.49

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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.