Home / 19,621.18-29,427.50-7,141.50

Finding the Fourth Proportional to 19,621.18, 29,427.50 and 7,141.50

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Solution

The fourth proportional to 19,621.18, 29,427.50 and 7,141.50 is: 10,710.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,621.18 : 29,427.50 = 7,141.50 : x
  2. Step 2: Convert to fraction form
    19,621.18/29,427.50 = 7,141.50/x
  3. Step 3: Cross multiply
    19,621.18x = 29,427.50 × 7,141.50
  4. Step 4: Simplify right side
    19,621.18x = 210,156,491.25
  5. Step 5: Solve for x
    x = 210,156,491.25/19,621.18
  6. Step 6: Final answer
    x = 10,710.70

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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.