Home / 21,172.60-31,762.52-8,699.36

Finding the Fourth Proportional to 21,172.60, 31,762.52 and 8,699.36

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Solution

The fourth proportional to 21,172.60, 31,762.52 and 8,699.36 is: 13,050.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,172.60 : 31,762.52 = 8,699.36 : x
  2. Step 2: Convert to fraction form
    21,172.60/31,762.52 = 8,699.36/x
  3. Step 3: Cross multiply
    21,172.60x = 31,762.52 × 8,699.36
  4. Step 4: Simplify right side
    21,172.60x = 276,313,595.99
  5. Step 5: Solve for x
    x = 276,313,595.99/21,172.60
  6. Step 6: Final answer
    x = 13,050.53

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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.