Home / 14,779.72-20,391.06-9,190.36

Finding the Fourth Proportional to 14,779.72, 20,391.06 and 9,190.36

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Solution

The fourth proportional to 14,779.72, 20,391.06 and 9,190.36 is: 12,679.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.72 : 20,391.06 = 9,190.36 : x
  2. Step 2: Convert to fraction form
    14,779.72/20,391.06 = 9,190.36/x
  3. Step 3: Cross multiply
    14,779.72x = 20,391.06 × 9,190.36
  4. Step 4: Simplify right side
    14,779.72x = 187,401,182.18
  5. Step 5: Solve for x
    x = 187,401,182.18/14,779.72
  6. Step 6: Final answer
    x = 12,679.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.