Home / 21,149.16-29,187.72-12,075.54

Finding the Fourth Proportional to 21,149.16, 29,187.72 and 12,075.54

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Solution

The fourth proportional to 21,149.16, 29,187.72 and 12,075.54 is: 16,665.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.16 : 29,187.72 = 12,075.54 : x
  2. Step 2: Convert to fraction form
    21,149.16/29,187.72 = 12,075.54/x
  3. Step 3: Cross multiply
    21,149.16x = 29,187.72 × 12,075.54
  4. Step 4: Simplify right side
    21,149.16x = 352,457,480.37
  5. Step 5: Solve for x
    x = 352,457,480.37/21,149.16
  6. Step 6: Final answer
    x = 16,665.32

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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.