Home / 20,515.98-30,775.47-7,368.45

Finding the Fourth Proportional to 20,515.98, 30,775.47 and 7,368.45

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Solution

The fourth proportional to 20,515.98, 30,775.47 and 7,368.45 is: 11,053.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.98 : 30,775.47 = 7,368.45 : x
  2. Step 2: Convert to fraction form
    20,515.98/30,775.47 = 7,368.45/x
  3. Step 3: Cross multiply
    20,515.98x = 30,775.47 × 7,368.45
  4. Step 4: Simplify right side
    20,515.98x = 226,767,511.92
  5. Step 5: Solve for x
    x = 226,767,511.92/20,515.98
  6. Step 6: Final answer
    x = 11,053.21

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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.