Home / 21,967.50-30,320.63-12,541.53

Finding the Fourth Proportional to 21,967.50, 30,320.63 and 12,541.53

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Solution

The fourth proportional to 21,967.50, 30,320.63 and 12,541.53 is: 17,310.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,967.50 : 30,320.63 = 12,541.53 : x
  2. Step 2: Convert to fraction form
    21,967.50/30,320.63 = 12,541.53/x
  3. Step 3: Cross multiply
    21,967.50x = 30,320.63 × 12,541.53
  4. Step 4: Simplify right side
    21,967.50x = 380,267,028.06
  5. Step 5: Solve for x
    x = 380,267,028.06/21,967.50
  6. Step 6: Final answer
    x = 17,310.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.