Home / 21,291.57-31,904.51-13,483.98

Finding the Fourth Proportional to 21,291.57, 31,904.51 and 13,483.98

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Solution

The fourth proportional to 21,291.57, 31,904.51 and 13,483.98 is: 20,205.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.57 : 31,904.51 = 13,483.98 : x
  2. Step 2: Convert to fraction form
    21,291.57/31,904.51 = 13,483.98/x
  3. Step 3: Cross multiply
    21,291.57x = 31,904.51 × 13,483.98
  4. Step 4: Simplify right side
    21,291.57x = 430,199,707.33
  5. Step 5: Solve for x
    x = 430,199,707.33/21,291.57
  6. Step 6: Final answer
    x = 20,205.17

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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.