Home / 31,484.08-43,374.12-21,907.53

Finding the Fourth Proportional to 31,484.08, 43,374.12 and 21,907.53

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Solution

The fourth proportional to 31,484.08, 43,374.12 and 21,907.53 is: 30,180.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,484.08 : 43,374.12 = 21,907.53 : x
  2. Step 2: Convert to fraction form
    31,484.08/43,374.12 = 21,907.53/x
  3. Step 3: Cross multiply
    31,484.08x = 43,374.12 × 21,907.53
  4. Step 4: Simplify right side
    31,484.08x = 950,219,662.41
  5. Step 5: Solve for x
    x = 950,219,662.41/31,484.08
  6. Step 6: Final answer
    x = 30,180.95

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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.