Home / 21,147.10-29,184.18-12,075.14

Finding the Fourth Proportional to 21,147.10, 29,184.18 and 12,075.14

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Solution

The fourth proportional to 21,147.10, 29,184.18 and 12,075.14 is: 16,664.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,147.10 : 29,184.18 = 12,075.14 : x
  2. Step 2: Convert to fraction form
    21,147.10/29,184.18 = 12,075.14/x
  3. Step 3: Cross multiply
    21,147.10x = 29,184.18 × 12,075.14
  4. Step 4: Simplify right side
    21,147.10x = 352,403,059.29
  5. Step 5: Solve for x
    x = 352,403,059.29/21,147.10
  6. Step 6: Final answer
    x = 16,664.37

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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.