Home / 31,681.84-43,713.51-21,631.21

Finding the Fourth Proportional to 31,681.84, 43,713.51 and 21,631.21

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Solution

The fourth proportional to 31,681.84, 43,713.51 and 21,631.21 is: 29,846.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,681.84 : 43,713.51 = 21,631.21 : x
  2. Step 2: Convert to fraction form
    31,681.84/43,713.51 = 21,631.21/x
  3. Step 3: Cross multiply
    31,681.84x = 43,713.51 × 21,631.21
  4. Step 4: Simplify right side
    31,681.84x = 945,576,114.65
  5. Step 5: Solve for x
    x = 945,576,114.65/31,681.84
  6. Step 6: Final answer
    x = 29,846.00

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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.