Home / 20,956.63-28,919.58-11,525.20

Finding the Fourth Proportional to 20,956.63, 28,919.58 and 11,525.20

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Solution

The fourth proportional to 20,956.63, 28,919.58 and 11,525.20 is: 15,904.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.63 : 28,919.58 = 11,525.20 : x
  2. Step 2: Convert to fraction form
    20,956.63/28,919.58 = 11,525.20/x
  3. Step 3: Cross multiply
    20,956.63x = 28,919.58 × 11,525.20
  4. Step 4: Simplify right side
    20,956.63x = 333,303,741.19
  5. Step 5: Solve for x
    x = 333,303,741.19/20,956.63
  6. Step 6: Final answer
    x = 15,904.45

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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.