Home / 15,412.85-21,249.93-12,577.34

Finding the Fourth Proportional to 15,412.85, 21,249.93 and 12,577.34

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Solution

The fourth proportional to 15,412.85, 21,249.93 and 12,577.34 is: 17,340.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,412.85 : 21,249.93 = 12,577.34 : x
  2. Step 2: Convert to fraction form
    15,412.85/21,249.93 = 12,577.34/x
  3. Step 3: Cross multiply
    15,412.85x = 21,249.93 × 12,577.34
  4. Step 4: Simplify right side
    15,412.85x = 267,267,594.59
  5. Step 5: Solve for x
    x = 267,267,594.59/15,412.85
  6. Step 6: Final answer
    x = 17,340.57

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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.