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Finding the Fourth Proportional to 29,235.40, 43,853.10 and 18,737.80

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Solution

The fourth proportional to 29,235.40, 43,853.10 and 18,737.80 is: 28,106.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,235.40 : 43,853.10 = 18,737.80 : x
  2. Step 2: Convert to fraction form
    29,235.40/43,853.10 = 18,737.80/x
  3. Step 3: Cross multiply
    29,235.40x = 43,853.10 × 18,737.80
  4. Step 4: Simplify right side
    29,235.40x = 821,710,617.18
  5. Step 5: Solve for x
    x = 821,710,617.18/29,235.40
  6. Step 6: Final answer
    x = 28,106.70

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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.