Home / 31,283.08-43,135.22-19,937.40

Finding the Fourth Proportional to 31,283.08, 43,135.22 and 19,937.40

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Solution

The fourth proportional to 31,283.08, 43,135.22 and 19,937.40 is: 27,491.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,283.08 : 43,135.22 = 19,937.40 : x
  2. Step 2: Convert to fraction form
    31,283.08/43,135.22 = 19,937.40/x
  3. Step 3: Cross multiply
    31,283.08x = 43,135.22 × 19,937.40
  4. Step 4: Simplify right side
    31,283.08x = 860,004,135.23
  5. Step 5: Solve for x
    x = 860,004,135.23/31,283.08
  6. Step 6: Final answer
    x = 27,491.03

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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.