Home / 20,378.72-30,569.70-8,692.04

Finding the Fourth Proportional to 20,378.72, 30,569.70 and 8,692.04

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Solution

The fourth proportional to 20,378.72, 30,569.70 and 8,692.04 is: 13,038.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.72 : 30,569.70 = 8,692.04 : x
  2. Step 2: Convert to fraction form
    20,378.72/30,569.70 = 8,692.04/x
  3. Step 3: Cross multiply
    20,378.72x = 30,569.70 × 8,692.04
  4. Step 4: Simplify right side
    20,378.72x = 265,713,055.19
  5. Step 5: Solve for x
    x = 265,713,055.19/20,378.72
  6. Step 6: Final answer
    x = 13,038.75

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1.5x scale

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.