Home / 13,290.58-18,342.10-7,322.81

Finding the Fourth Proportional to 13,290.58, 18,342.10 and 7,322.81

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Solution

The fourth proportional to 13,290.58, 18,342.10 and 7,322.81 is: 10,106.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.58 : 18,342.10 = 7,322.81 : x
  2. Step 2: Convert to fraction form
    13,290.58/18,342.10 = 7,322.81/x
  3. Step 3: Cross multiply
    13,290.58x = 18,342.10 × 7,322.81
  4. Step 4: Simplify right side
    13,290.58x = 134,315,589.55
  5. Step 5: Solve for x
    x = 134,315,589.55/13,290.58
  6. Step 6: Final answer
    x = 10,106.07

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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.