Home / 21,289.21-29,350.48-14,907.22

Finding the Fourth Proportional to 21,289.21, 29,350.48 and 14,907.22

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Solution

The fourth proportional to 21,289.21, 29,350.48 and 14,907.22 is: 20,551.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,289.21 : 29,350.48 = 14,907.22 : x
  2. Step 2: Convert to fraction form
    21,289.21/29,350.48 = 14,907.22/x
  3. Step 3: Cross multiply
    21,289.21x = 29,350.48 × 14,907.22
  4. Step 4: Simplify right side
    21,289.21x = 437,533,841.18
  5. Step 5: Solve for x
    x = 437,533,841.18/21,289.21
  6. Step 6: Final answer
    x = 20,551.91

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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.