Home / 28,539.61-42,809.71-12,745.45

Finding the Fourth Proportional to 28,539.61, 42,809.71 and 12,745.45

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Solution

The fourth proportional to 28,539.61, 42,809.71 and 12,745.45 is: 19,118.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,539.61 : 42,809.71 = 12,745.45 : x
  2. Step 2: Convert to fraction form
    28,539.61/42,809.71 = 12,745.45/x
  3. Step 3: Cross multiply
    28,539.61x = 42,809.71 × 12,745.45
  4. Step 4: Simplify right side
    28,539.61x = 545,628,804.27
  5. Step 5: Solve for x
    x = 545,628,804.27/28,539.61
  6. Step 6: Final answer
    x = 19,118.30

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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.