Home / 18,420.80-27,643.30-10,106.64

Finding the Fourth Proportional to 18,420.80, 27,643.30 and 10,106.64

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Solution

The fourth proportional to 18,420.80, 27,643.30 and 10,106.64 is: 15,166.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.80 : 27,643.30 = 10,106.64 : x
  2. Step 2: Convert to fraction form
    18,420.80/27,643.30 = 10,106.64/x
  3. Step 3: Cross multiply
    18,420.80x = 27,643.30 × 10,106.64
  4. Step 4: Simplify right side
    18,420.80x = 279,380,881.51
  5. Step 5: Solve for x
    x = 279,380,881.51/18,420.80
  6. Step 6: Final answer
    x = 15,166.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.