Home / 13,313.39-18,372.53-7,345.05

Finding the Fourth Proportional to 13,313.39, 18,372.53 and 7,345.05

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Solution

The fourth proportional to 13,313.39, 18,372.53 and 7,345.05 is: 10,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,313.39 : 18,372.53 = 7,345.05 : x
  2. Step 2: Convert to fraction form
    13,313.39/18,372.53 = 7,345.05/x
  3. Step 3: Cross multiply
    13,313.39x = 18,372.53 × 7,345.05
  4. Step 4: Simplify right side
    13,313.39x = 134,947,151.48
  5. Step 5: Solve for x
    x = 134,947,151.48/13,313.39
  6. Step 6: Final answer
    x = 10,136.20

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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.