Home / 13,407.22-18,503.13-7,440.05

Finding the Fourth Proportional to 13,407.22, 18,503.13 and 7,440.05

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Solution

The fourth proportional to 13,407.22, 18,503.13 and 7,440.05 is: 10,267.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.22 : 18,503.13 = 7,440.05 : x
  2. Step 2: Convert to fraction form
    13,407.22/18,503.13 = 7,440.05/x
  3. Step 3: Cross multiply
    13,407.22x = 18,503.13 × 7,440.05
  4. Step 4: Simplify right side
    13,407.22x = 137,664,286.51
  5. Step 5: Solve for x
    x = 137,664,286.51/13,407.22
  6. Step 6: Final answer
    x = 10,267.92

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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.