Home / 21,069.12-29,075.76-11,637.12

Finding the Fourth Proportional to 21,069.12, 29,075.76 and 11,637.12

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Solution

The fourth proportional to 21,069.12, 29,075.76 and 11,637.12 is: 16,059.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.12 : 29,075.76 = 11,637.12 : x
  2. Step 2: Convert to fraction form
    21,069.12/29,075.76 = 11,637.12/x
  3. Step 3: Cross multiply
    21,069.12x = 29,075.76 × 11,637.12
  4. Step 4: Simplify right side
    21,069.12x = 338,358,108.21
  5. Step 5: Solve for x
    x = 338,358,108.21/21,069.12
  6. Step 6: Final answer
    x = 16,059.43

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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.