Home / 28,353.21-42,528.09-12,553.63

Finding the Fourth Proportional to 28,353.21, 42,528.09 and 12,553.63

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Solution

The fourth proportional to 28,353.21, 42,528.09 and 12,553.63 is: 18,829.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,353.21 : 42,528.09 = 12,553.63 : x
  2. Step 2: Convert to fraction form
    28,353.21/42,528.09 = 12,553.63/x
  3. Step 3: Cross multiply
    28,353.21x = 42,528.09 × 12,553.63
  4. Step 4: Simplify right side
    28,353.21x = 533,882,015.83
  5. Step 5: Solve for x
    x = 533,882,015.83/28,353.21
  6. Step 6: Final answer
    x = 18,829.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.