Home / 20,637.87-28,480.01-11,206.50

Finding the Fourth Proportional to 20,637.87, 28,480.01 and 11,206.50

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Solution

The fourth proportional to 20,637.87, 28,480.01 and 11,206.50 is: 15,464.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.87 : 28,480.01 = 11,206.50 : x
  2. Step 2: Convert to fraction form
    20,637.87/28,480.01 = 11,206.50/x
  3. Step 3: Cross multiply
    20,637.87x = 28,480.01 × 11,206.50
  4. Step 4: Simplify right side
    20,637.87x = 319,161,232.07
  5. Step 5: Solve for x
    x = 319,161,232.07/20,637.87
  6. Step 6: Final answer
    x = 15,464.83

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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.