Home / 14,138.82-21,208.50-4,278.06

Finding the Fourth Proportional to 14,138.82, 21,208.50 and 4,278.06

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Solution

The fourth proportional to 14,138.82, 21,208.50 and 4,278.06 is: 6,417.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,138.82 : 21,208.50 = 4,278.06 : x
  2. Step 2: Convert to fraction form
    14,138.82/21,208.50 = 4,278.06/x
  3. Step 3: Cross multiply
    14,138.82x = 21,208.50 × 4,278.06
  4. Step 4: Simplify right side
    14,138.82x = 90,731,235.51
  5. Step 5: Solve for x
    x = 90,731,235.51/14,138.82
  6. Step 6: Final answer
    x = 6,417.17

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1.5x scale

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.