Home / 20,417.84-28,181.21-13,340.19

Finding the Fourth Proportional to 20,417.84, 28,181.21 and 13,340.19

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Solution

The fourth proportional to 20,417.84, 28,181.21 and 13,340.19 is: 18,412.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.84 : 28,181.21 = 13,340.19 : x
  2. Step 2: Convert to fraction form
    20,417.84/28,181.21 = 13,340.19/x
  3. Step 3: Cross multiply
    20,417.84x = 28,181.21 × 13,340.19
  4. Step 4: Simplify right side
    20,417.84x = 375,942,629.13
  5. Step 5: Solve for x
    x = 375,942,629.13/20,417.84
  6. Step 6: Final answer
    x = 18,412.46

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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.