Home / 30,981.47-46,357.38-18,508.28

Finding the Fourth Proportional to 30,981.47, 46,357.38 and 18,508.28

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Solution

The fourth proportional to 30,981.47, 46,357.38 and 18,508.28 is: 27,693.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,981.47 : 46,357.38 = 18,508.28 : x
  2. Step 2: Convert to fraction form
    30,981.47/46,357.38 = 18,508.28/x
  3. Step 3: Cross multiply
    30,981.47x = 46,357.38 × 18,508.28
  4. Step 4: Simplify right side
    30,981.47x = 857,995,137.32
  5. Step 5: Solve for x
    x = 857,995,137.32/30,981.47
  6. Step 6: Final answer
    x = 27,693.82

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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.