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Finding the Fourth Proportional to 19,361.71, 29,043.64 and 5,509.63

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Solution

The fourth proportional to 19,361.71, 29,043.64 and 5,509.63 is: 8,264.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,361.71 : 29,043.64 = 5,509.63 : x
  2. Step 2: Convert to fraction form
    19,361.71/29,043.64 = 5,509.63/x
  3. Step 3: Cross multiply
    19,361.71x = 29,043.64 × 5,509.63
  4. Step 4: Simplify right side
    19,361.71x = 160,019,565.04
  5. Step 5: Solve for x
    x = 160,019,565.04/19,361.71
  6. Step 6: Final answer
    x = 8,264.75

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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.