Home / 21,120.85-29,113.27-16,637.50

Finding the Fourth Proportional to 21,120.85, 29,113.27 and 16,637.50

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Solution

The fourth proportional to 21,120.85, 29,113.27 and 16,637.50 is: 22,933.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,120.85 : 29,113.27 = 16,637.50 : x
  2. Step 2: Convert to fraction form
    21,120.85/29,113.27 = 16,637.50/x
  3. Step 3: Cross multiply
    21,120.85x = 29,113.27 × 16,637.50
  4. Step 4: Simplify right side
    21,120.85x = 484,372,029.63
  5. Step 5: Solve for x
    x = 484,372,029.63/21,120.85
  6. Step 6: Final answer
    x = 22,933.36

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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.