Home / 21,118.41-31,677.62-7,075.85

Finding the Fourth Proportional to 21,118.41, 31,677.62 and 7,075.85

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Solution

The fourth proportional to 21,118.41, 31,677.62 and 7,075.85 is: 10,613.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.41 : 31,677.62 = 7,075.85 : x
  2. Step 2: Convert to fraction form
    21,118.41/31,677.62 = 7,075.85/x
  3. Step 3: Cross multiply
    21,118.41x = 31,677.62 × 7,075.85
  4. Step 4: Simplify right side
    21,118.41x = 224,145,893.71
  5. Step 5: Solve for x
    x = 224,145,893.71/21,118.41
  6. Step 6: Final answer
    x = 10,613.77

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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.