Home / 31,728.16-47,599.44-21,871.36

Finding the Fourth Proportional to 31,728.16, 47,599.44 and 21,871.36

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Solution

The fourth proportional to 31,728.16, 47,599.44 and 21,871.36 is: 32,812.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.16 : 47,599.44 = 21,871.36 : x
  2. Step 2: Convert to fraction form
    31,728.16/47,599.44 = 21,871.36/x
  3. Step 3: Cross multiply
    31,728.16x = 47,599.44 × 21,871.36
  4. Step 4: Simplify right side
    31,728.16x = 1,041,064,488.04
  5. Step 5: Solve for x
    x = 1,041,064,488.04/31,728.16
  6. Step 6: Final answer
    x = 32,812.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.