Home / 14,118.90-21,164.58-6,721.37

Finding the Fourth Proportional to 14,118.90, 21,164.58 and 6,721.37

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Solution

The fourth proportional to 14,118.90, 21,164.58 and 6,721.37 is: 10,075.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,118.90 : 21,164.58 = 6,721.37 : x
  2. Step 2: Convert to fraction form
    14,118.90/21,164.58 = 6,721.37/x
  3. Step 3: Cross multiply
    14,118.90x = 21,164.58 × 6,721.37
  4. Step 4: Simplify right side
    14,118.90x = 142,255,025.99
  5. Step 5: Solve for x
    x = 142,255,025.99/14,118.90
  6. Step 6: Final answer
    x = 10,075.50

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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.