Home / 13,060.20-19,590.30-12,865.80

Finding the Fourth Proportional to 13,060.20, 19,590.30 and 12,865.80

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Solution

The fourth proportional to 13,060.20, 19,590.30 and 12,865.80 is: 19,298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,060.20 : 19,590.30 = 12,865.80 : x
  2. Step 2: Convert to fraction form
    13,060.20/19,590.30 = 12,865.80/x
  3. Step 3: Cross multiply
    13,060.20x = 19,590.30 × 12,865.80
  4. Step 4: Simplify right side
    13,060.20x = 252,044,881.74
  5. Step 5: Solve for x
    x = 252,044,881.74/13,060.20
  6. Step 6: Final answer
    x = 19,298.70

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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.