Home / 19,492.57-29,187.96-12,808.05

Finding the Fourth Proportional to 19,492.57, 29,187.96 and 12,808.05

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Solution

The fourth proportional to 19,492.57, 29,187.96 and 12,808.05 is: 19,178.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,492.57 : 29,187.96 = 12,808.05 : x
  2. Step 2: Convert to fraction form
    19,492.57/29,187.96 = 12,808.05/x
  3. Step 3: Cross multiply
    19,492.57x = 29,187.96 × 12,808.05
  4. Step 4: Simplify right side
    19,492.57x = 373,840,851.08
  5. Step 5: Solve for x
    x = 373,840,851.08/19,492.57
  6. Step 6: Final answer
    x = 19,178.63

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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.