Home / 31,012.96-42,812.58-19,841.44

Finding the Fourth Proportional to 31,012.96, 42,812.58 and 19,841.44

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Solution

The fourth proportional to 31,012.96, 42,812.58 and 19,841.44 is: 27,390.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,012.96 : 42,812.58 = 19,841.44 : x
  2. Step 2: Convert to fraction form
    31,012.96/42,812.58 = 19,841.44/x
  3. Step 3: Cross multiply
    31,012.96x = 42,812.58 × 19,841.44
  4. Step 4: Simplify right side
    31,012.96x = 849,463,237.32
  5. Step 5: Solve for x
    x = 849,463,237.32/31,012.96
  6. Step 6: Final answer
    x = 27,390.59

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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.