Home / 21,429.90-29,571.08-12,356.28

Finding the Fourth Proportional to 21,429.90, 29,571.08 and 12,356.28

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Solution

The fourth proportional to 21,429.90, 29,571.08 and 12,356.28 is: 17,050.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.90 : 29,571.08 = 12,356.28 : x
  2. Step 2: Convert to fraction form
    21,429.90/29,571.08 = 12,356.28/x
  3. Step 3: Cross multiply
    21,429.90x = 29,571.08 × 12,356.28
  4. Step 4: Simplify right side
    21,429.90x = 365,388,482.60
  5. Step 5: Solve for x
    x = 365,388,482.60/21,429.90
  6. Step 6: Final answer
    x = 17,050.41

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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.