Home / 13,566.49-18,720.11-7,902.16

Finding the Fourth Proportional to 13,566.49, 18,720.11 and 7,902.16

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Solution

The fourth proportional to 13,566.49, 18,720.11 and 7,902.16 is: 10,904.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,566.49 : 18,720.11 = 7,902.16 : x
  2. Step 2: Convert to fraction form
    13,566.49/18,720.11 = 7,902.16/x
  3. Step 3: Cross multiply
    13,566.49x = 18,720.11 × 7,902.16
  4. Step 4: Simplify right side
    13,566.49x = 147,929,277.39
  5. Step 5: Solve for x
    x = 147,929,277.39/13,566.49
  6. Step 6: Final answer
    x = 10,904.02

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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.