Home / 31,323.69-43,220.14-19,985.96

Finding the Fourth Proportional to 31,323.69, 43,220.14 and 19,985.96

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Solution

The fourth proportional to 31,323.69, 43,220.14 and 19,985.96 is: 27,576.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,323.69 : 43,220.14 = 19,985.96 : x
  2. Step 2: Convert to fraction form
    31,323.69/43,220.14 = 19,985.96/x
  3. Step 3: Cross multiply
    31,323.69x = 43,220.14 × 19,985.96
  4. Step 4: Simplify right side
    31,323.69x = 863,796,047.32
  5. Step 5: Solve for x
    x = 863,796,047.32/31,323.69
  6. Step 6: Final answer
    x = 27,576.45

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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.