Home / 21,325.43-31,967.49-11,969.93

Finding the Fourth Proportional to 21,325.43, 31,967.49 and 11,969.93

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Solution

The fourth proportional to 21,325.43, 31,967.49 and 11,969.93 is: 17,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.43 : 31,967.49 = 11,969.93 : x
  2. Step 2: Convert to fraction form
    21,325.43/31,967.49 = 11,969.93/x
  3. Step 3: Cross multiply
    21,325.43x = 31,967.49 × 11,969.93
  4. Step 4: Simplify right side
    21,325.43x = 382,648,617.58
  5. Step 5: Solve for x
    x = 382,648,617.58/21,325.43
  6. Step 6: Final answer
    x = 17,943.30

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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.