Home / 21,507.98-29,675.81-12,550.37

Finding the Fourth Proportional to 21,507.98, 29,675.81 and 12,550.37

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Solution

The fourth proportional to 21,507.98, 29,675.81 and 12,550.37 is: 17,316.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.98 : 29,675.81 = 12,550.37 : x
  2. Step 2: Convert to fraction form
    21,507.98/29,675.81 = 12,550.37/x
  3. Step 3: Cross multiply
    21,507.98x = 29,675.81 × 12,550.37
  4. Step 4: Simplify right side
    21,507.98x = 372,442,278.55
  5. Step 5: Solve for x
    x = 372,442,278.55/21,507.98
  6. Step 6: Final answer
    x = 17,316.47

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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.