Home / 20,908.40-28,853.68-11,477.04

Finding the Fourth Proportional to 20,908.40, 28,853.68 and 11,477.04

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Solution

The fourth proportional to 20,908.40, 28,853.68 and 11,477.04 is: 15,838.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.40 : 28,853.68 = 11,477.04 : x
  2. Step 2: Convert to fraction form
    20,908.40/28,853.68 = 11,477.04/x
  3. Step 3: Cross multiply
    20,908.40x = 28,853.68 × 11,477.04
  4. Step 4: Simplify right side
    20,908.40x = 331,154,839.51
  5. Step 5: Solve for x
    x = 331,154,839.51/20,908.40
  6. Step 6: Final answer
    x = 15,838.36

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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.