Home / 21,275.81-31,918.84-6,483.84

Finding the Fourth Proportional to 21,275.81, 31,918.84 and 6,483.84

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Solution

The fourth proportional to 21,275.81, 31,918.84 and 6,483.84 is: 9,727.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275.81 : 31,918.84 = 6,483.84 : x
  2. Step 2: Convert to fraction form
    21,275.81/31,918.84 = 6,483.84/x
  3. Step 3: Cross multiply
    21,275.81x = 31,918.84 × 6,483.84
  4. Step 4: Simplify right side
    21,275.81x = 206,956,552.11
  5. Step 5: Solve for x
    x = 206,956,552.11/21,275.81
  6. Step 6: Final answer
    x = 9,727.32

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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.