Home / 21,563.88-29,756.56-12,130.62

Finding the Fourth Proportional to 21,563.88, 29,756.56 and 12,130.62

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Solution

The fourth proportional to 21,563.88, 29,756.56 and 12,130.62 is: 16,739.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,563.88 : 29,756.56 = 12,130.62 : x
  2. Step 2: Convert to fraction form
    21,563.88/29,756.56 = 12,130.62/x
  3. Step 3: Cross multiply
    21,563.88x = 29,756.56 × 12,130.62
  4. Step 4: Simplify right side
    21,563.88x = 360,965,521.87
  5. Step 5: Solve for x
    x = 360,965,521.87/21,563.88
  6. Step 6: Final answer
    x = 16,739.36

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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.