Home / 30,623.67-45,749.45-19,440.81

Finding the Fourth Proportional to 30,623.67, 45,749.45 and 19,440.81

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Solution

The fourth proportional to 30,623.67, 45,749.45 and 19,440.81 is: 29,043.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,623.67 : 45,749.45 = 19,440.81 : x
  2. Step 2: Convert to fraction form
    30,623.67/45,749.45 = 19,440.81/x
  3. Step 3: Cross multiply
    30,623.67x = 45,749.45 × 19,440.81
  4. Step 4: Simplify right side
    30,623.67x = 889,406,413.66
  5. Step 5: Solve for x
    x = 889,406,413.66/30,623.67
  6. Step 6: Final answer
    x = 29,043.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.