Home / 20,641.37-28,492.36-12,257.81

Finding the Fourth Proportional to 20,641.37, 28,492.36 and 12,257.81

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Solution

The fourth proportional to 20,641.37, 28,492.36 and 12,257.81 is: 16,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.37 : 28,492.36 = 12,257.81 : x
  2. Step 2: Convert to fraction form
    20,641.37/28,492.36 = 12,257.81/x
  3. Step 3: Cross multiply
    20,641.37x = 28,492.36 × 12,257.81
  4. Step 4: Simplify right side
    20,641.37x = 349,254,021.88
  5. Step 5: Solve for x
    x = 349,254,021.88/20,641.37
  6. Step 6: Final answer
    x = 16,920.10

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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.