Home / 13,448.64-18,558.10-7,480.56

Finding the Fourth Proportional to 13,448.64, 18,558.10 and 7,480.56

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Solution

The fourth proportional to 13,448.64, 18,558.10 and 7,480.56 is: 10,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,448.64 : 18,558.10 = 7,480.56 : x
  2. Step 2: Convert to fraction form
    13,448.64/18,558.10 = 7,480.56/x
  3. Step 3: Cross multiply
    13,448.64x = 18,558.10 × 7,480.56
  4. Step 4: Simplify right side
    13,448.64x = 138,824,980.54
  5. Step 5: Solve for x
    x = 138,824,980.54/13,448.64
  6. Step 6: Final answer
    x = 10,322.60

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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.