Home / 20,368.01-28,106.66-11,871.51

Finding the Fourth Proportional to 20,368.01, 28,106.66 and 11,871.51

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Solution

The fourth proportional to 20,368.01, 28,106.66 and 11,871.51 is: 16,381.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.01 : 28,106.66 = 11,871.51 : x
  2. Step 2: Convert to fraction form
    20,368.01/28,106.66 = 11,871.51/x
  3. Step 3: Cross multiply
    20,368.01x = 28,106.66 × 11,871.51
  4. Step 4: Simplify right side
    20,368.01x = 333,668,435.90
  5. Step 5: Solve for x
    x = 333,668,435.90/20,368.01
  6. Step 6: Final answer
    x = 16,381.99

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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.