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Finding the Fourth Proportional to 29,135.70, 43,725.15 and 19,271.70

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Solution

The fourth proportional to 29,135.70, 43,725.15 and 19,271.70 is: 28,921.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,135.70 : 43,725.15 = 19,271.70 : x
  2. Step 2: Convert to fraction form
    29,135.70/43,725.15 = 19,271.70/x
  3. Step 3: Cross multiply
    29,135.70x = 43,725.15 × 19,271.70
  4. Step 4: Simplify right side
    29,135.70x = 842,657,973.26
  5. Step 5: Solve for x
    x = 842,657,973.26/29,135.70
  6. Step 6: Final answer
    x = 28,921.84

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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.