Home / 14,006.45-21,009.72-3,618.20

Finding the Fourth Proportional to 14,006.45, 21,009.72 and 3,618.20

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Solution

The fourth proportional to 14,006.45, 21,009.72 and 3,618.20 is: 5,427.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,006.45 : 21,009.72 = 3,618.20 : x
  2. Step 2: Convert to fraction form
    14,006.45/21,009.72 = 3,618.20/x
  3. Step 3: Cross multiply
    14,006.45x = 21,009.72 × 3,618.20
  4. Step 4: Simplify right side
    14,006.45x = 76,017,368.90
  5. Step 5: Solve for x
    x = 76,017,368.90/14,006.45
  6. Step 6: Final answer
    x = 5,427.31

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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.