Home / 20,762.76-28,653.28-11,810.03

Finding the Fourth Proportional to 20,762.76, 28,653.28 and 11,810.03

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Solution

The fourth proportional to 20,762.76, 28,653.28 and 11,810.03 is: 16,298.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.76 : 28,653.28 = 11,810.03 : x
  2. Step 2: Convert to fraction form
    20,762.76/28,653.28 = 11,810.03/x
  3. Step 3: Cross multiply
    20,762.76x = 28,653.28 × 11,810.03
  4. Step 4: Simplify right side
    20,762.76x = 338,396,138.51
  5. Step 5: Solve for x
    x = 338,396,138.51/20,762.76
  6. Step 6: Final answer
    x = 16,298.23

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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.