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Finding the Fourth Proportional to 29,125.80, 43,615.80 and 19,211.40

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Solution

The fourth proportional to 29,125.80, 43,615.80 and 19,211.40 is: 28,769.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,125.80 : 43,615.80 = 19,211.40 : x
  2. Step 2: Convert to fraction form
    29,125.80/43,615.80 = 19,211.40/x
  3. Step 3: Cross multiply
    29,125.80x = 43,615.80 × 19,211.40
  4. Step 4: Simplify right side
    29,125.80x = 837,920,580.12
  5. Step 5: Solve for x
    x = 837,920,580.12/29,125.80
  6. Step 6: Final answer
    x = 28,769.02

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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.