Home / 28,537.52-42,807.79-12,739.88

Finding the Fourth Proportional to 28,537.52, 42,807.79 and 12,739.88

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Solution

The fourth proportional to 28,537.52, 42,807.79 and 12,739.88 is: 19,110.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,537.52 : 42,807.79 = 12,739.88 : x
  2. Step 2: Convert to fraction form
    28,537.52/42,807.79 = 12,739.88/x
  3. Step 3: Cross multiply
    28,537.52x = 42,807.79 × 12,739.88
  4. Step 4: Simplify right side
    28,537.52x = 545,366,230.61
  5. Step 5: Solve for x
    x = 545,366,230.61/28,537.52
  6. Step 6: Final answer
    x = 19,110.50

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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.