Home / 19,421.40-29,132.10-9,579.90

Finding the Fourth Proportional to 19,421.40, 29,132.10 and 9,579.90

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Solution

The fourth proportional to 19,421.40, 29,132.10 and 9,579.90 is: 14,369.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.40 : 29,132.10 = 9,579.90 : x
  2. Step 2: Convert to fraction form
    19,421.40/29,132.10 = 9,579.90/x
  3. Step 3: Cross multiply
    19,421.40x = 29,132.10 × 9,579.90
  4. Step 4: Simplify right side
    19,421.40x = 279,082,604.79
  5. Step 5: Solve for x
    x = 279,082,604.79/19,421.40
  6. Step 6: Final answer
    x = 14,369.85

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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.