Home / 20,518.57-30,722.33-10,637.08

Finding the Fourth Proportional to 20,518.57, 30,722.33 and 10,637.08

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Solution

The fourth proportional to 20,518.57, 30,722.33 and 10,637.08 is: 15,926.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518.57 : 30,722.33 = 10,637.08 : x
  2. Step 2: Convert to fraction form
    20,518.57/30,722.33 = 10,637.08/x
  3. Step 3: Cross multiply
    20,518.57x = 30,722.33 × 10,637.08
  4. Step 4: Simplify right side
    20,518.57x = 326,795,882.00
  5. Step 5: Solve for x
    x = 326,795,882.00/20,518.57
  6. Step 6: Final answer
    x = 15,926.84

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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.