Home / 30,511.32-42,098.04-19,182.72

Finding the Fourth Proportional to 30,511.32, 42,098.04 and 19,182.72

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Solution

The fourth proportional to 30,511.32, 42,098.04 and 19,182.72 is: 26,467.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,511.32 : 42,098.04 = 19,182.72 : x
  2. Step 2: Convert to fraction form
    30,511.32/42,098.04 = 19,182.72/x
  3. Step 3: Cross multiply
    30,511.32x = 42,098.04 × 19,182.72
  4. Step 4: Simplify right side
    30,511.32x = 807,554,913.87
  5. Step 5: Solve for x
    x = 807,554,913.87/30,511.32
  6. Step 6: Final answer
    x = 26,467.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.