Home / 30,857.21-42,583.08-17,428.62

Finding the Fourth Proportional to 30,857.21, 42,583.08 and 17,428.62

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Solution

The fourth proportional to 30,857.21, 42,583.08 and 17,428.62 is: 24,051.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,857.21 : 42,583.08 = 17,428.62 : x
  2. Step 2: Convert to fraction form
    30,857.21/42,583.08 = 17,428.62/x
  3. Step 3: Cross multiply
    30,857.21x = 42,583.08 × 17,428.62
  4. Step 4: Simplify right side
    30,857.21x = 742,164,319.75
  5. Step 5: Solve for x
    x = 742,164,319.75/30,857.21
  6. Step 6: Final answer
    x = 24,051.57

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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.