Home / 28,328.16-42,497.31-11,678.94

Finding the Fourth Proportional to 28,328.16, 42,497.31 and 11,678.94

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Solution

The fourth proportional to 28,328.16, 42,497.31 and 11,678.94 is: 17,520.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,328.16 : 42,497.31 = 11,678.94 : x
  2. Step 2: Convert to fraction form
    28,328.16/42,497.31 = 11,678.94/x
  3. Step 3: Cross multiply
    28,328.16x = 42,497.31 × 11,678.94
  4. Step 4: Simplify right side
    28,328.16x = 496,323,533.65
  5. Step 5: Solve for x
    x = 496,323,533.65/28,328.16
  6. Step 6: Final answer
    x = 17,520.50

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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.