Home / 13,348.13-18,420.11-7,379.84

Finding the Fourth Proportional to 13,348.13, 18,420.11 and 7,379.84

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Solution

The fourth proportional to 13,348.13, 18,420.11 and 7,379.84 is: 10,184.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.13 : 18,420.11 = 7,379.84 : x
  2. Step 2: Convert to fraction form
    13,348.13/18,420.11 = 7,379.84/x
  3. Step 3: Cross multiply
    13,348.13x = 18,420.11 × 7,379.84
  4. Step 4: Simplify right side
    13,348.13x = 135,937,501.41
  5. Step 5: Solve for x
    x = 135,937,501.41/13,348.13
  6. Step 6: Final answer
    x = 10,184.01

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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.