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Finding the Fourth Proportional to 13,216.88, 19,828.68 and 9,328.88

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Solution

The fourth proportional to 13,216.88, 19,828.68 and 9,328.88 is: 13,995.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,216.88 : 19,828.68 = 9,328.88 : x
  2. Step 2: Convert to fraction form
    13,216.88/19,828.68 = 9,328.88/x
  3. Step 3: Cross multiply
    13,216.88x = 19,828.68 × 9,328.88
  4. Step 4: Simplify right side
    13,216.88x = 184,979,376.28
  5. Step 5: Solve for x
    x = 184,979,376.28/13,216.88
  6. Step 6: Final answer
    x = 13,995.69

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1.5x scale

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.