Home / 39,290-58,929.23-12,995.12

Finding the Fourth Proportional to 39,290, 58,929.23 and 12,995.12

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Solution

The fourth proportional to 39,290, 58,929.23 and 12,995.12 is: 19,490.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,290 : 58,929.23 = 12,995.12 : x
  2. Step 2: Convert to fraction form
    39,290/58,929.23 = 12,995.12/x
  3. Step 3: Cross multiply
    39,290x = 58,929.23 × 12,995.12
  4. Step 4: Simplify right side
    39,290x = 765,792,415.36
  5. Step 5: Solve for x
    x = 765,792,415.36/39,290
  6. Step 6: Final answer
    x = 19,490.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.