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Finding the Fourth Proportional to 13,465.17, 18,579.78 and 7,495.47

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Solution

The fourth proportional to 13,465.17, 18,579.78 and 7,495.47 is: 10,342.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.17 : 18,579.78 = 7,495.47 : x
  2. Step 2: Convert to fraction form
    13,465.17/18,579.78 = 7,495.47/x
  3. Step 3: Cross multiply
    13,465.17x = 18,579.78 × 7,495.47
  4. Step 4: Simplify right side
    13,465.17x = 139,264,183.60
  5. Step 5: Solve for x
    x = 139,264,183.60/13,465.17
  6. Step 6: Final answer
    x = 10,342.55

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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.