Home / 28,431.54-42,646.89-12,632.37

Finding the Fourth Proportional to 28,431.54, 42,646.89 and 12,632.37

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Solution

The fourth proportional to 28,431.54, 42,646.89 and 12,632.37 is: 18,948.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431.54 : 42,646.89 = 12,632.37 : x
  2. Step 2: Convert to fraction form
    28,431.54/42,646.89 = 12,632.37/x
  3. Step 3: Cross multiply
    28,431.54x = 42,646.89 × 12,632.37
  4. Step 4: Simplify right side
    28,431.54x = 538,731,293.83
  5. Step 5: Solve for x
    x = 538,731,293.83/28,431.54
  6. Step 6: Final answer
    x = 18,948.37

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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.