Home / 13,290.86-18,341.44-7,322.40

Finding the Fourth Proportional to 13,290.86, 18,341.44 and 7,322.40

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Solution

The fourth proportional to 13,290.86, 18,341.44 and 7,322.40 is: 10,104.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.86 : 18,341.44 = 7,322.40 : x
  2. Step 2: Convert to fraction form
    13,290.86/18,341.44 = 7,322.40/x
  3. Step 3: Cross multiply
    13,290.86x = 18,341.44 × 7,322.40
  4. Step 4: Simplify right side
    13,290.86x = 134,303,341.95
  5. Step 5: Solve for x
    x = 134,303,341.95/13,290.86
  6. Step 6: Final answer
    x = 10,104.94

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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.