Home / 28,571.40-39,428.10-15,996.60

Finding the Fourth Proportional to 28,571.40, 39,428.10 and 15,996.60

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Solution

The fourth proportional to 28,571.40, 39,428.10 and 15,996.60 is: 22,075.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,571.40 : 39,428.10 = 15,996.60 : x
  2. Step 2: Convert to fraction form
    28,571.40/39,428.10 = 15,996.60/x
  3. Step 3: Cross multiply
    28,571.40x = 39,428.10 × 15,996.60
  4. Step 4: Simplify right side
    28,571.40x = 630,715,544.46
  5. Step 5: Solve for x
    x = 630,715,544.46/28,571.40
  6. Step 6: Final answer
    x = 22,075.07

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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.