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Finding the Fourth Proportional to 19,334.40, 29,023.20 and 18,065.40

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Solution

The fourth proportional to 19,334.40, 29,023.20 and 18,065.40 is: 27,118.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,334.40 : 29,023.20 = 18,065.40 : x
  2. Step 2: Convert to fraction form
    19,334.40/29,023.20 = 18,065.40/x
  3. Step 3: Cross multiply
    19,334.40x = 29,023.20 × 18,065.40
  4. Step 4: Simplify right side
    19,334.40x = 524,315,717.28
  5. Step 5: Solve for x
    x = 524,315,717.28/19,334.40
  6. Step 6: Final answer
    x = 27,118.28

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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.