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Finding the Fourth Proportional to 19,297.86, 28,946.80 and 7,610.76

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Solution

The fourth proportional to 19,297.86, 28,946.80 and 7,610.76 is: 11,416.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,297.86 : 28,946.80 = 7,610.76 : x
  2. Step 2: Convert to fraction form
    19,297.86/28,946.80 = 7,610.76/x
  3. Step 3: Cross multiply
    19,297.86x = 28,946.80 × 7,610.76
  4. Step 4: Simplify right side
    19,297.86x = 220,307,147.57
  5. Step 5: Solve for x
    x = 220,307,147.57/19,297.86
  6. Step 6: Final answer
    x = 11,416.14

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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.