Home / 21,069.48-29,075.12-12,116.44

Finding the Fourth Proportional to 21,069.48, 29,075.12 and 12,116.44

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Solution

The fourth proportional to 21,069.48, 29,075.12 and 12,116.44 is: 16,720.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.48 : 29,075.12 = 12,116.44 : x
  2. Step 2: Convert to fraction form
    21,069.48/29,075.12 = 12,116.44/x
  3. Step 3: Cross multiply
    21,069.48x = 29,075.12 × 12,116.44
  4. Step 4: Simplify right side
    21,069.48x = 352,286,946.97
  5. Step 5: Solve for x
    x = 352,286,946.97/21,069.48
  6. Step 6: Final answer
    x = 16,720.25

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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.