Home / 14,701.72-20,288.40-7,987.29

Finding the Fourth Proportional to 14,701.72, 20,288.40 and 7,987.29

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Solution

The fourth proportional to 14,701.72, 20,288.40 and 7,987.29 is: 11,022.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,701.72 : 20,288.40 = 7,987.29 : x
  2. Step 2: Convert to fraction form
    14,701.72/20,288.40 = 7,987.29/x
  3. Step 3: Cross multiply
    14,701.72x = 20,288.40 × 7,987.29
  4. Step 4: Simplify right side
    14,701.72x = 162,049,334.44
  5. Step 5: Solve for x
    x = 162,049,334.44/14,701.72
  6. Step 6: Final answer
    x = 11,022.47

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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.