Home / 19,619.18-29,424.50-7,139.50

Finding the Fourth Proportional to 19,619.18, 29,424.50 and 7,139.50

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Solution

The fourth proportional to 19,619.18, 29,424.50 and 7,139.50 is: 10,707.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,619.18 : 29,424.50 = 7,139.50 : x
  2. Step 2: Convert to fraction form
    19,619.18/29,424.50 = 7,139.50/x
  3. Step 3: Cross multiply
    19,619.18x = 29,424.50 × 7,139.50
  4. Step 4: Simplify right side
    19,619.18x = 210,076,217.75
  5. Step 5: Solve for x
    x = 210,076,217.75/19,619.18
  6. Step 6: Final answer
    x = 10,707.70

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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.