Home / 30,855.45-42,578.06-17,428.01

Finding the Fourth Proportional to 30,855.45, 42,578.06 and 17,428.01

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Solution

The fourth proportional to 30,855.45, 42,578.06 and 17,428.01 is: 24,049.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,855.45 : 42,578.06 = 17,428.01 : x
  2. Step 2: Convert to fraction form
    30,855.45/42,578.06 = 17,428.01/x
  3. Step 3: Cross multiply
    30,855.45x = 42,578.06 × 17,428.01
  4. Step 4: Simplify right side
    30,855.45x = 742,050,555.43
  5. Step 5: Solve for x
    x = 742,050,555.43/30,855.45
  6. Step 6: Final answer
    x = 24,049.25

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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.