Home / 13,170.16-18,173.08-8,460.84

Finding the Fourth Proportional to 13,170.16, 18,173.08 and 8,460.84

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Solution

The fourth proportional to 13,170.16, 18,173.08 and 8,460.84 is: 11,674.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.16 : 18,173.08 = 8,460.84 : x
  2. Step 2: Convert to fraction form
    13,170.16/18,173.08 = 8,460.84/x
  3. Step 3: Cross multiply
    13,170.16x = 18,173.08 × 8,460.84
  4. Step 4: Simplify right side
    13,170.16x = 153,759,522.19
  5. Step 5: Solve for x
    x = 153,759,522.19/13,170.16
  6. Step 6: Final answer
    x = 11,674.84

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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.