Home / 30,928.50-42,692.40-18,353.25

Finding the Fourth Proportional to 30,928.50, 42,692.40 and 18,353.25

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Solution

The fourth proportional to 30,928.50, 42,692.40 and 18,353.25 is: 25,334.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,928.50 : 42,692.40 = 18,353.25 : x
  2. Step 2: Convert to fraction form
    30,928.50/42,692.40 = 18,353.25/x
  3. Step 3: Cross multiply
    30,928.50x = 42,692.40 × 18,353.25
  4. Step 4: Simplify right side
    30,928.50x = 783,544,290.30
  5. Step 5: Solve for x
    x = 783,544,290.30/30,928.50
  6. Step 6: Final answer
    x = 25,334.05

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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.