Home / 19,769.40-29,654.10-18,916.20

Finding the Fourth Proportional to 19,769.40, 29,654.10 and 18,916.20

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Solution

The fourth proportional to 19,769.40, 29,654.10 and 18,916.20 is: 28,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,769.40 : 29,654.10 = 18,916.20 : x
  2. Step 2: Convert to fraction form
    19,769.40/29,654.10 = 18,916.20/x
  3. Step 3: Cross multiply
    19,769.40x = 29,654.10 × 18,916.20
  4. Step 4: Simplify right side
    19,769.40x = 560,942,886.42
  5. Step 5: Solve for x
    x = 560,942,886.42/19,769.40
  6. Step 6: Final answer
    x = 28,374.30

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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.