Home / 21,014.87-31,501.04-13,624.03

Finding the Fourth Proportional to 21,014.87, 31,501.04 and 13,624.03

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Solution

The fourth proportional to 21,014.87, 31,501.04 and 13,624.03 is: 20,422.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.87 : 31,501.04 = 13,624.03 : x
  2. Step 2: Convert to fraction form
    21,014.87/31,501.04 = 13,624.03/x
  3. Step 3: Cross multiply
    21,014.87x = 31,501.04 × 13,624.03
  4. Step 4: Simplify right side
    21,014.87x = 429,170,956.49
  5. Step 5: Solve for x
    x = 429,170,956.49/21,014.87
  6. Step 6: Final answer
    x = 20,422.25

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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.