Home / 13,348.12-18,420.28-7,379.76

Finding the Fourth Proportional to 13,348.12, 18,420.28 and 7,379.76

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Solution

The fourth proportional to 13,348.12, 18,420.28 and 7,379.76 is: 10,184.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.12 : 18,420.28 = 7,379.76 : x
  2. Step 2: Convert to fraction form
    13,348.12/18,420.28 = 7,379.76/x
  3. Step 3: Cross multiply
    13,348.12x = 18,420.28 × 7,379.76
  4. Step 4: Simplify right side
    13,348.12x = 135,937,245.53
  5. Step 5: Solve for x
    x = 135,937,245.53/13,348.12
  6. Step 6: Final answer
    x = 10,184.00

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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.