Home / 20,574.51-28,392.78-11,621.58

Finding the Fourth Proportional to 20,574.51, 28,392.78 and 11,621.58

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Solution

The fourth proportional to 20,574.51, 28,392.78 and 11,621.58 is: 16,037.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,574.51 : 28,392.78 = 11,621.58 : x
  2. Step 2: Convert to fraction form
    20,574.51/28,392.78 = 11,621.58/x
  3. Step 3: Cross multiply
    20,574.51x = 28,392.78 × 11,621.58
  4. Step 4: Simplify right side
    20,574.51x = 329,968,964.19
  5. Step 5: Solve for x
    x = 329,968,964.19/20,574.51
  6. Step 6: Final answer
    x = 16,037.76

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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.