Home / 28,643.10-42,976.80-13,844.40

Finding the Fourth Proportional to 28,643.10, 42,976.80 and 13,844.40

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Solution

The fourth proportional to 28,643.10, 42,976.80 and 13,844.40 is: 20,772.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,643.10 : 42,976.80 = 13,844.40 : x
  2. Step 2: Convert to fraction form
    28,643.10/42,976.80 = 13,844.40/x
  3. Step 3: Cross multiply
    28,643.10x = 42,976.80 × 13,844.40
  4. Step 4: Simplify right side
    28,643.10x = 594,988,009.92
  5. Step 5: Solve for x
    x = 594,988,009.92/28,643.10
  6. Step 6: Final answer
    x = 20,772.47

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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.