Home / 12,219.02-18,328.53-7,021.58

Finding the Fourth Proportional to 12,219.02, 18,328.53 and 7,021.58

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Solution

The fourth proportional to 12,219.02, 18,328.53 and 7,021.58 is: 10,532.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.02 : 18,328.53 = 7,021.58 : x
  2. Step 2: Convert to fraction form
    12,219.02/18,328.53 = 7,021.58/x
  3. Step 3: Cross multiply
    12,219.02x = 18,328.53 × 7,021.58
  4. Step 4: Simplify right side
    12,219.02x = 128,695,239.68
  5. Step 5: Solve for x
    x = 128,695,239.68/12,219.02
  6. Step 6: Final answer
    x = 10,532.37

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Similar ratio
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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.