Home / 31,139.54-46,680.52-12,415.02

Finding the Fourth Proportional to 31,139.54, 46,680.52 and 12,415.02

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Solution

The fourth proportional to 31,139.54, 46,680.52 and 12,415.02 is: 18,611.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,139.54 : 46,680.52 = 12,415.02 : x
  2. Step 2: Convert to fraction form
    31,139.54/46,680.52 = 12,415.02/x
  3. Step 3: Cross multiply
    31,139.54x = 46,680.52 × 12,415.02
  4. Step 4: Simplify right side
    31,139.54x = 579,539,356.01
  5. Step 5: Solve for x
    x = 579,539,356.01/31,139.54
  6. Step 6: Final answer
    x = 18,611.05

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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.