Home / 20,866.84-28,796.40-12,373.25

Finding the Fourth Proportional to 20,866.84, 28,796.40 and 12,373.25

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Solution

The fourth proportional to 20,866.84, 28,796.40 and 12,373.25 is: 17,075.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.84 : 28,796.40 = 12,373.25 : x
  2. Step 2: Convert to fraction form
    20,866.84/28,796.40 = 12,373.25/x
  3. Step 3: Cross multiply
    20,866.84x = 28,796.40 × 12,373.25
  4. Step 4: Simplify right side
    20,866.84x = 356,304,994.43
  5. Step 5: Solve for x
    x = 356,304,994.43/20,866.84
  6. Step 6: Final answer
    x = 17,075.18

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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.