Home / 15,280.08-21,112.72-11,022.72

Finding the Fourth Proportional to 15,280.08, 21,112.72 and 11,022.72

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Solution

The fourth proportional to 15,280.08, 21,112.72 and 11,022.72 is: 15,230.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,280.08 : 21,112.72 = 11,022.72 : x
  2. Step 2: Convert to fraction form
    15,280.08/21,112.72 = 11,022.72/x
  3. Step 3: Cross multiply
    15,280.08x = 21,112.72 × 11,022.72
  4. Step 4: Simplify right side
    15,280.08x = 232,719,601.00
  5. Step 5: Solve for x
    x = 232,719,601.00/15,280.08
  6. Step 6: Final answer
    x = 15,230.26

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1.5x scale

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.