Home / 30,971.20-42,740.04-16,823.92

Finding the Fourth Proportional to 30,971.20, 42,740.04 and 16,823.92

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Solution

The fourth proportional to 30,971.20, 42,740.04 and 16,823.92 is: 23,216.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.20 : 42,740.04 = 16,823.92 : x
  2. Step 2: Convert to fraction form
    30,971.20/42,740.04 = 16,823.92/x
  3. Step 3: Cross multiply
    30,971.20x = 42,740.04 × 16,823.92
  4. Step 4: Simplify right side
    30,971.20x = 719,055,013.76
  5. Step 5: Solve for x
    x = 719,055,013.76/30,971.20
  6. Step 6: Final answer
    x = 23,216.89

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.