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Finding the Fourth Proportional to 19,451.20, 29,209.20 and 10,692.40

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Solution

The fourth proportional to 19,451.20, 29,209.20 and 10,692.40 is: 16,056.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,451.20 : 29,209.20 = 10,692.40 : x
  2. Step 2: Convert to fraction form
    19,451.20/29,209.20 = 10,692.40/x
  3. Step 3: Cross multiply
    19,451.20x = 29,209.20 × 10,692.40
  4. Step 4: Simplify right side
    19,451.20x = 312,316,450.08
  5. Step 5: Solve for x
    x = 312,316,450.08/19,451.20
  6. Step 6: Final answer
    x = 16,056.41

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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.