Home / 30,628.53-45,869.90-21,277.89

Finding the Fourth Proportional to 30,628.53, 45,869.90 and 21,277.89

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Solution

The fourth proportional to 30,628.53, 45,869.90 and 21,277.89 is: 31,866.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,628.53 : 45,869.90 = 21,277.89 : x
  2. Step 2: Convert to fraction form
    30,628.53/45,869.90 = 21,277.89/x
  3. Step 3: Cross multiply
    30,628.53x = 45,869.90 × 21,277.89
  4. Step 4: Simplify right side
    30,628.53x = 976,014,580.12
  5. Step 5: Solve for x
    x = 976,014,580.12/30,628.53
  6. Step 6: Final answer
    x = 31,866.19

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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.