Home / 28,464.40-39,275.70-19,992.41

Finding the Fourth Proportional to 28,464.40, 39,275.70 and 19,992.41

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Solution

The fourth proportional to 28,464.40, 39,275.70 and 19,992.41 is: 27,585.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.40 : 39,275.70 = 19,992.41 : x
  2. Step 2: Convert to fraction form
    28,464.40/39,275.70 = 19,992.41/x
  3. Step 3: Cross multiply
    28,464.40x = 39,275.70 × 19,992.41
  4. Step 4: Simplify right side
    28,464.40x = 785,215,940.06
  5. Step 5: Solve for x
    x = 785,215,940.06/28,464.40
  6. Step 6: Final answer
    x = 27,585.89

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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.