Home / 19,540.15-29,312.96-6,389.90

Finding the Fourth Proportional to 19,540.15, 29,312.96 and 6,389.90

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Solution

The fourth proportional to 19,540.15, 29,312.96 and 6,389.90 is: 9,585.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,540.15 : 29,312.96 = 6,389.90 : x
  2. Step 2: Convert to fraction form
    19,540.15/29,312.96 = 6,389.90/x
  3. Step 3: Cross multiply
    19,540.15x = 29,312.96 × 6,389.90
  4. Step 4: Simplify right side
    19,540.15x = 187,306,814.51
  5. Step 5: Solve for x
    x = 187,306,814.51/19,540.15
  6. Step 6: Final answer
    x = 9,585.74

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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.