Home / 39,185.46-54,075.74-21,280.32

Finding the Fourth Proportional to 39,185.46, 54,075.74 and 21,280.32

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Solution

The fourth proportional to 39,185.46, 54,075.74 and 21,280.32 is: 29,366.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,185.46 : 54,075.74 = 21,280.32 : x
  2. Step 2: Convert to fraction form
    39,185.46/54,075.74 = 21,280.32/x
  3. Step 3: Cross multiply
    39,185.46x = 54,075.74 × 21,280.32
  4. Step 4: Simplify right side
    39,185.46x = 1,150,749,051.44
  5. Step 5: Solve for x
    x = 1,150,749,051.44/39,185.46
  6. Step 6: Final answer
    x = 29,366.74

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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.