Home / 19,720.85-27,214.77-10,768.36

Finding the Fourth Proportional to 19,720.85, 27,214.77 and 10,768.36

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Solution

The fourth proportional to 19,720.85, 27,214.77 and 10,768.36 is: 14,860.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.85 : 27,214.77 = 10,768.36 : x
  2. Step 2: Convert to fraction form
    19,720.85/27,214.77 = 10,768.36/x
  3. Step 3: Cross multiply
    19,720.85x = 27,214.77 × 10,768.36
  4. Step 4: Simplify right side
    19,720.85x = 293,058,477.61
  5. Step 5: Solve for x
    x = 293,058,477.61/19,720.85
  6. Step 6: Final answer
    x = 14,860.34

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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.