Home / 20,725.89-28,602.21-12,230.10

Finding the Fourth Proportional to 20,725.89, 28,602.21 and 12,230.10

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Solution

The fourth proportional to 20,725.89, 28,602.21 and 12,230.10 is: 16,877.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.89 : 28,602.21 = 12,230.10 : x
  2. Step 2: Convert to fraction form
    20,725.89/28,602.21 = 12,230.10/x
  3. Step 3: Cross multiply
    20,725.89x = 28,602.21 × 12,230.10
  4. Step 4: Simplify right side
    20,725.89x = 349,807,888.52
  5. Step 5: Solve for x
    x = 349,807,888.52/20,725.89
  6. Step 6: Final answer
    x = 16,877.82

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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.