Home / 15,533.62-21,437.61-8,821.36

Finding the Fourth Proportional to 15,533.62, 21,437.61 and 8,821.36

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Solution

The fourth proportional to 15,533.62, 21,437.61 and 8,821.36 is: 12,174.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,533.62 : 21,437.61 = 8,821.36 : x
  2. Step 2: Convert to fraction form
    15,533.62/21,437.61 = 8,821.36/x
  3. Step 3: Cross multiply
    15,533.62x = 21,437.61 × 8,821.36
  4. Step 4: Simplify right side
    15,533.62x = 189,108,798.10
  5. Step 5: Solve for x
    x = 189,108,798.10/15,533.62
  6. Step 6: Final answer
    x = 12,174.16

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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.