Home / 30,494.48-42,087.38-20,926.49

Finding the Fourth Proportional to 30,494.48, 42,087.38 and 20,926.49

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Solution

The fourth proportional to 30,494.48, 42,087.38 and 20,926.49 is: 28,881.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,494.48 : 42,087.38 = 20,926.49 : x
  2. Step 2: Convert to fraction form
    30,494.48/42,087.38 = 20,926.49/x
  3. Step 3: Cross multiply
    30,494.48x = 42,087.38 × 20,926.49
  4. Step 4: Simplify right side
    30,494.48x = 880,740,821.63
  5. Step 5: Solve for x
    x = 880,740,821.63/30,494.48
  6. Step 6: Final answer
    x = 28,881.98

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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.