Home / 28,651.45-42,959.91-12,853.63

Finding the Fourth Proportional to 28,651.45, 42,959.91 and 12,853.63

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Solution

The fourth proportional to 28,651.45, 42,959.91 and 12,853.63 is: 19,272.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,651.45 : 42,959.91 = 12,853.63 : x
  2. Step 2: Convert to fraction form
    28,651.45/42,959.91 = 12,853.63/x
  3. Step 3: Cross multiply
    28,651.45x = 42,959.91 × 12,853.63
  4. Step 4: Simplify right side
    28,651.45x = 552,190,787.97
  5. Step 5: Solve for x
    x = 552,190,787.97/28,651.45
  6. Step 6: Final answer
    x = 19,272.70

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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.