Home / 21,075.92-29,084.76-11,644.40

Finding the Fourth Proportional to 21,075.92, 29,084.76 and 11,644.40

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Solution

The fourth proportional to 21,075.92, 29,084.76 and 11,644.40 is: 16,069.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.92 : 29,084.76 = 11,644.40 : x
  2. Step 2: Convert to fraction form
    21,075.92/29,084.76 = 11,644.40/x
  3. Step 3: Cross multiply
    21,075.92x = 29,084.76 × 11,644.40
  4. Step 4: Simplify right side
    21,075.92x = 338,674,579.34
  5. Step 5: Solve for x
    x = 338,674,579.34/21,075.92
  6. Step 6: Final answer
    x = 16,069.27

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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.