Home / 18,220.42-25,145.98-10,666.30

Finding the Fourth Proportional to 18,220.42, 25,145.98 and 10,666.30

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Solution

The fourth proportional to 18,220.42, 25,145.98 and 10,666.30 is: 14,720.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.42 : 25,145.98 = 10,666.30 : x
  2. Step 2: Convert to fraction form
    18,220.42/25,145.98 = 10,666.30/x
  3. Step 3: Cross multiply
    18,220.42x = 25,145.98 × 10,666.30
  4. Step 4: Simplify right side
    18,220.42x = 268,214,566.47
  5. Step 5: Solve for x
    x = 268,214,566.47/18,220.42
  6. Step 6: Final answer
    x = 14,720.55

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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.