Home / 13,415.16-18,506.70-8,376.12

Finding the Fourth Proportional to 13,415.16, 18,506.70 and 8,376.12

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Solution

The fourth proportional to 13,415.16, 18,506.70 and 8,376.12 is: 11,555.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.16 : 18,506.70 = 8,376.12 : x
  2. Step 2: Convert to fraction form
    13,415.16/18,506.70 = 8,376.12/x
  3. Step 3: Cross multiply
    13,415.16x = 18,506.70 × 8,376.12
  4. Step 4: Simplify right side
    13,415.16x = 155,014,340.00
  5. Step 5: Solve for x
    x = 155,014,340.00/13,415.16
  6. Step 6: Final answer
    x = 11,555.16

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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.