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Finding the Fourth Proportional to 19,678.80, 29,500.92 and 9,303.12

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Solution

The fourth proportional to 19,678.80, 29,500.92 and 9,303.12 is: 13,946.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,678.80 : 29,500.92 = 9,303.12 : x
  2. Step 2: Convert to fraction form
    19,678.80/29,500.92 = 9,303.12/x
  3. Step 3: Cross multiply
    19,678.80x = 29,500.92 × 9,303.12
  4. Step 4: Simplify right side
    19,678.80x = 274,450,598.87
  5. Step 5: Solve for x
    x = 274,450,598.87/19,678.80
  6. Step 6: Final answer
    x = 13,946.51

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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.