Home / 13,219.74-19,825.02-5,319.90

Finding the Fourth Proportional to 13,219.74, 19,825.02 and 5,319.90

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Solution

The fourth proportional to 13,219.74, 19,825.02 and 5,319.90 is: 7,978.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.74 : 19,825.02 = 5,319.90 : x
  2. Step 2: Convert to fraction form
    13,219.74/19,825.02 = 5,319.90/x
  3. Step 3: Cross multiply
    13,219.74x = 19,825.02 × 5,319.90
  4. Step 4: Simplify right side
    13,219.74x = 105,467,123.90
  5. Step 5: Solve for x
    x = 105,467,123.90/13,219.74
  6. Step 6: Final answer
    x = 7,978.00

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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.