Home / 39,770.81-59,675.63-18,712.95

Finding the Fourth Proportional to 39,770.81, 59,675.63 and 18,712.95

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Solution

The fourth proportional to 39,770.81, 59,675.63 and 18,712.95 is: 28,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,770.81 : 59,675.63 = 18,712.95 : x
  2. Step 2: Convert to fraction form
    39,770.81/59,675.63 = 18,712.95/x
  3. Step 3: Cross multiply
    39,770.81x = 59,675.63 × 18,712.95
  4. Step 4: Simplify right side
    39,770.81x = 1,116,706,774.97
  5. Step 5: Solve for x
    x = 1,116,706,774.97/39,770.81
  6. Step 6: Final answer
    x = 28,078.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.