Home / 13,287.53-18,336.80-7,319.19

Finding the Fourth Proportional to 13,287.53, 18,336.80 and 7,319.19

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Solution

The fourth proportional to 13,287.53, 18,336.80 and 7,319.19 is: 10,100.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.53 : 18,336.80 = 7,319.19 : x
  2. Step 2: Convert to fraction form
    13,287.53/18,336.80 = 7,319.19/x
  3. Step 3: Cross multiply
    13,287.53x = 18,336.80 × 7,319.19
  4. Step 4: Simplify right side
    13,287.53x = 134,210,523.19
  5. Step 5: Solve for x
    x = 134,210,523.19/13,287.53
  6. Step 6: Final answer
    x = 10,100.49

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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.