Home / 19,657.90-29,499-7,971.22

Finding the Fourth Proportional to 19,657.90, 29,499 and 7,971.22

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Solution

The fourth proportional to 19,657.90, 29,499 and 7,971.22 is: 11,961.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.90 : 29,499 = 7,971.22 : x
  2. Step 2: Convert to fraction form
    19,657.90/29,499 = 7,971.22/x
  3. Step 3: Cross multiply
    19,657.90x = 29,499 × 7,971.22
  4. Step 4: Simplify right side
    19,657.90x = 235,143,018.78
  5. Step 5: Solve for x
    x = 235,143,018.78/19,657.90
  6. Step 6: Final answer
    x = 11,961.76

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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.