Home / 13,291.13-18,340.93-7,322.47

Finding the Fourth Proportional to 13,291.13, 18,340.93 and 7,322.47

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Solution

The fourth proportional to 13,291.13, 18,340.93 and 7,322.47 is: 10,104.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.13 : 18,340.93 = 7,322.47 : x
  2. Step 2: Convert to fraction form
    13,291.13/18,340.93 = 7,322.47/x
  3. Step 3: Cross multiply
    13,291.13x = 18,340.93 × 7,322.47
  4. Step 4: Simplify right side
    13,291.13x = 134,300,909.70
  5. Step 5: Solve for x
    x = 134,300,909.70/13,291.13
  6. Step 6: Final answer
    x = 10,104.55

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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.