Home / 19,688.09-29,521.22-7,840.94

Finding the Fourth Proportional to 19,688.09, 29,521.22 and 7,840.94

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Solution

The fourth proportional to 19,688.09, 29,521.22 and 7,840.94 is: 11,757.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,688.09 : 29,521.22 = 7,840.94 : x
  2. Step 2: Convert to fraction form
    19,688.09/29,521.22 = 7,840.94/x
  3. Step 3: Cross multiply
    19,688.09x = 29,521.22 × 7,840.94
  4. Step 4: Simplify right side
    19,688.09x = 231,473,927.94
  5. Step 5: Solve for x
    x = 231,473,927.94/19,688.09
  6. Step 6: Final answer
    x = 11,757.06

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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.