Home / 21,004-28,985.52-11,572.56

Finding the Fourth Proportional to 21,004, 28,985.52 and 11,572.56

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Solution

The fourth proportional to 21,004, 28,985.52 and 11,572.56 is: 15,970.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004 : 28,985.52 = 11,572.56 : x
  2. Step 2: Convert to fraction form
    21,004/28,985.52 = 11,572.56/x
  3. Step 3: Cross multiply
    21,004x = 28,985.52 × 11,572.56
  4. Step 4: Simplify right side
    21,004x = 335,436,669.33
  5. Step 5: Solve for x
    x = 335,436,669.33/21,004
  6. Step 6: Final answer
    x = 15,970.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.