Home / 13,349.32-18,420.40-7,381.10

Finding the Fourth Proportional to 13,349.32, 18,420.40 and 7,381.10

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Solution

The fourth proportional to 13,349.32, 18,420.40 and 7,381.10 is: 10,185.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,349.32 : 18,420.40 = 7,381.10 : x
  2. Step 2: Convert to fraction form
    13,349.32/18,420.40 = 7,381.10/x
  3. Step 3: Cross multiply
    13,349.32x = 18,420.40 × 7,381.10
  4. Step 4: Simplify right side
    13,349.32x = 135,962,814.44
  5. Step 5: Solve for x
    x = 135,962,814.44/13,349.32
  6. Step 6: Final answer
    x = 10,185.00

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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.