Home / 21,560.99-29,753.73-12,129.35

Finding the Fourth Proportional to 21,560.99, 29,753.73 and 12,129.35

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Solution

The fourth proportional to 21,560.99, 29,753.73 and 12,129.35 is: 16,738.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,560.99 : 29,753.73 = 12,129.35 : x
  2. Step 2: Convert to fraction form
    21,560.99/29,753.73 = 12,129.35/x
  3. Step 3: Cross multiply
    21,560.99x = 29,753.73 × 12,129.35
  4. Step 4: Simplify right side
    21,560.99x = 360,893,256.21
  5. Step 5: Solve for x
    x = 360,893,256.21/21,560.99
  6. Step 6: Final answer
    x = 16,738.25

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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.