Home / 13,290.91-19,940.46-4,971.77

Finding the Fourth Proportional to 13,290.91, 19,940.46 and 4,971.77

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Solution

The fourth proportional to 13,290.91, 19,940.46 and 4,971.77 is: 7,459.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.91 : 19,940.46 = 4,971.77 : x
  2. Step 2: Convert to fraction form
    13,290.91/19,940.46 = 4,971.77/x
  3. Step 3: Cross multiply
    13,290.91x = 19,940.46 × 4,971.77
  4. Step 4: Simplify right side
    13,290.91x = 99,139,281.11
  5. Step 5: Solve for x
    x = 99,139,281.11/13,290.91
  6. Step 6: Final answer
    x = 7,459.18

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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.