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Finding the Fourth Proportional to 9,495.78, 13,106.95 and 5,518.47

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Solution

The fourth proportional to 9,495.78, 13,106.95 and 5,518.47 is: 7,617.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,495.78 : 13,106.95 = 5,518.47 : x
  2. Step 2: Convert to fraction form
    9,495.78/13,106.95 = 5,518.47/x
  3. Step 3: Cross multiply
    9,495.78x = 13,106.95 × 5,518.47
  4. Step 4: Simplify right side
    9,495.78x = 72,330,345.72
  5. Step 5: Solve for x
    x = 72,330,345.72/9,495.78
  6. Step 6: Final answer
    x = 7,617.11

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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.