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Finding the Fourth Proportional to 19,367.40, 29,036.70 and 10,612.20

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Solution

The fourth proportional to 19,367.40, 29,036.70 and 10,612.20 is: 15,910.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,367.40 : 29,036.70 = 10,612.20 : x
  2. Step 2: Convert to fraction form
    19,367.40/29,036.70 = 10,612.20/x
  3. Step 3: Cross multiply
    19,367.40x = 29,036.70 × 10,612.20
  4. Step 4: Simplify right side
    19,367.40x = 308,143,267.74
  5. Step 5: Solve for x
    x = 308,143,267.74/19,367.40
  6. Step 6: Final answer
    x = 15,910.41

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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.