Home / 15,533.52-21,436.24-8,460

Finding the Fourth Proportional to 15,533.52, 21,436.24 and 8,460

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Solution

The fourth proportional to 15,533.52, 21,436.24 and 8,460 is: 11,674.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,533.52 : 21,436.24 = 8,460 : x
  2. Step 2: Convert to fraction form
    15,533.52/21,436.24 = 8,460/x
  3. Step 3: Cross multiply
    15,533.52x = 21,436.24 × 8,460
  4. Step 4: Simplify right side
    15,533.52x = 181,350,590.40
  5. Step 5: Solve for x
    x = 181,350,590.40/15,533.52
  6. Step 6: Final answer
    x = 11,674.79

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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.