Home / 19,539.72-29,348.82-11,657.64

Finding the Fourth Proportional to 19,539.72, 29,348.82 and 11,657.64

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Solution

The fourth proportional to 19,539.72, 29,348.82 and 11,657.64 is: 17,509.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,539.72 : 29,348.82 = 11,657.64 : x
  2. Step 2: Convert to fraction form
    19,539.72/29,348.82 = 11,657.64/x
  3. Step 3: Cross multiply
    19,539.72x = 29,348.82 × 11,657.64
  4. Step 4: Simplify right side
    19,539.72x = 342,137,875.47
  5. Step 5: Solve for x
    x = 342,137,875.47/19,539.72
  6. Step 6: Final answer
    x = 17,509.86

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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.