Home / 30,699.40-42,365.12-17,270.67

Finding the Fourth Proportional to 30,699.40, 42,365.12 and 17,270.67

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Solution

The fourth proportional to 30,699.40, 42,365.12 and 17,270.67 is: 23,833.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,699.40 : 42,365.12 = 17,270.67 : x
  2. Step 2: Convert to fraction form
    30,699.40/42,365.12 = 17,270.67/x
  3. Step 3: Cross multiply
    30,699.40x = 42,365.12 × 17,270.67
  4. Step 4: Simplify right side
    30,699.40x = 731,674,007.03
  5. Step 5: Solve for x
    x = 731,674,007.03/30,699.40
  6. Step 6: Final answer
    x = 23,833.50

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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.