Home / 21,105.37-29,124.23-11,543.35

Finding the Fourth Proportional to 21,105.37, 29,124.23 and 11,543.35

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Solution

The fourth proportional to 21,105.37, 29,124.23 and 11,543.35 is: 15,929.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,105.37 : 29,124.23 = 11,543.35 : x
  2. Step 2: Convert to fraction form
    21,105.37/29,124.23 = 11,543.35/x
  3. Step 3: Cross multiply
    21,105.37x = 29,124.23 × 11,543.35
  4. Step 4: Simplify right side
    21,105.37x = 336,191,180.37
  5. Step 5: Solve for x
    x = 336,191,180.37/21,105.37
  6. Step 6: Final answer
    x = 15,929.18

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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.