Home / 12,590.48-18,813.34-8,663.60

Finding the Fourth Proportional to 12,590.48, 18,813.34 and 8,663.60

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Solution

The fourth proportional to 12,590.48, 18,813.34 and 8,663.60 is: 12,945.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,590.48 : 18,813.34 = 8,663.60 : x
  2. Step 2: Convert to fraction form
    12,590.48/18,813.34 = 8,663.60/x
  3. Step 3: Cross multiply
    12,590.48x = 18,813.34 × 8,663.60
  4. Step 4: Simplify right side
    12,590.48x = 162,991,252.42
  5. Step 5: Solve for x
    x = 162,991,252.42/12,590.48
  6. Step 6: Final answer
    x = 12,945.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.