Home / 19,397.86-29,109.55-10,638.93

Finding the Fourth Proportional to 19,397.86, 29,109.55 and 10,638.93

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Solution

The fourth proportional to 19,397.86, 29,109.55 and 10,638.93 is: 15,965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,397.86 : 29,109.55 = 10,638.93 : x
  2. Step 2: Convert to fraction form
    19,397.86/29,109.55 = 10,638.93/x
  3. Step 3: Cross multiply
    19,397.86x = 29,109.55 × 10,638.93
  4. Step 4: Simplify right side
    19,397.86x = 309,694,319.23
  5. Step 5: Solve for x
    x = 309,694,319.23/19,397.86
  6. Step 6: Final answer
    x = 15,965.39

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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.