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Finding the Fourth Proportional to 19,378.40, 29,024.40 and 15,922.40

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Solution

The fourth proportional to 19,378.40, 29,024.40 and 15,922.40 is: 23,848.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,378.40 : 29,024.40 = 15,922.40 : x
  2. Step 2: Convert to fraction form
    19,378.40/29,024.40 = 15,922.40/x
  3. Step 3: Cross multiply
    19,378.40x = 29,024.40 × 15,922.40
  4. Step 4: Simplify right side
    19,378.40x = 462,138,106.56
  5. Step 5: Solve for x
    x = 462,138,106.56/19,378.40
  6. Step 6: Final answer
    x = 23,848.10

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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.