Home / 20,357.36-28,088.04-11,972.24

Finding the Fourth Proportional to 20,357.36, 28,088.04 and 11,972.24

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Solution

The fourth proportional to 20,357.36, 28,088.04 and 11,972.24 is: 16,518.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.36 : 28,088.04 = 11,972.24 : x
  2. Step 2: Convert to fraction form
    20,357.36/28,088.04 = 11,972.24/x
  3. Step 3: Cross multiply
    20,357.36x = 28,088.04 × 11,972.24
  4. Step 4: Simplify right side
    20,357.36x = 336,276,756.01
  5. Step 5: Solve for x
    x = 336,276,756.01/20,357.36
  6. Step 6: Final answer
    x = 16,518.68

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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.