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Finding the Fourth Proportional to 19,339.70, 29,009.55 and 13,102.70

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Solution

The fourth proportional to 19,339.70, 29,009.55 and 13,102.70 is: 19,654.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,339.70 : 29,009.55 = 13,102.70 : x
  2. Step 2: Convert to fraction form
    19,339.70/29,009.55 = 13,102.70/x
  3. Step 3: Cross multiply
    19,339.70x = 29,009.55 × 13,102.70
  4. Step 4: Simplify right side
    19,339.70x = 380,103,430.79
  5. Step 5: Solve for x
    x = 380,103,430.79/19,339.70
  6. Step 6: Final answer
    x = 19,654.05

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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.