Home / 14,287.05-21,505.08-12,928.68

Finding the Fourth Proportional to 14,287.05, 21,505.08 and 12,928.68

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Solution

The fourth proportional to 14,287.05, 21,505.08 and 12,928.68 is: 19,460.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,287.05 : 21,505.08 = 12,928.68 : x
  2. Step 2: Convert to fraction form
    14,287.05/21,505.08 = 12,928.68/x
  3. Step 3: Cross multiply
    14,287.05x = 21,505.08 × 12,928.68
  4. Step 4: Simplify right side
    14,287.05x = 278,032,297.69
  5. Step 5: Solve for x
    x = 278,032,297.69/14,287.05
  6. Step 6: Final answer
    x = 19,460.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.