Home / 21,075.41-31,609.62-6,280.86

Finding the Fourth Proportional to 21,075.41, 31,609.62 and 6,280.86

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Solution

The fourth proportional to 21,075.41, 31,609.62 and 6,280.86 is: 9,420.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.41 : 31,609.62 = 6,280.86 : x
  2. Step 2: Convert to fraction form
    21,075.41/31,609.62 = 6,280.86/x
  3. Step 3: Cross multiply
    21,075.41x = 31,609.62 × 6,280.86
  4. Step 4: Simplify right side
    21,075.41x = 198,535,716.41
  5. Step 5: Solve for x
    x = 198,535,716.41/21,075.41
  6. Step 6: Final answer
    x = 9,420.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.