Home / 13,315.80-19,964.10-8,701.40

Finding the Fourth Proportional to 13,315.80, 19,964.10 and 8,701.40

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Solution

The fourth proportional to 13,315.80, 19,964.10 and 8,701.40 is: 13,045.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.80 : 19,964.10 = 8,701.40 : x
  2. Step 2: Convert to fraction form
    13,315.80/19,964.10 = 8,701.40/x
  3. Step 3: Cross multiply
    13,315.80x = 19,964.10 × 8,701.40
  4. Step 4: Simplify right side
    13,315.80x = 173,715,619.74
  5. Step 5: Solve for x
    x = 173,715,619.74/13,315.80
  6. Step 6: Final answer
    x = 13,045.83

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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.