Home / 21,011.63-31,506.30-6,218.51

Finding the Fourth Proportional to 21,011.63, 31,506.30 and 6,218.51

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Solution

The fourth proportional to 21,011.63, 31,506.30 and 6,218.51 is: 9,324.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.63 : 31,506.30 = 6,218.51 : x
  2. Step 2: Convert to fraction form
    21,011.63/31,506.30 = 6,218.51/x
  3. Step 3: Cross multiply
    21,011.63x = 31,506.30 × 6,218.51
  4. Step 4: Simplify right side
    21,011.63x = 195,922,084.08
  5. Step 5: Solve for x
    x = 195,922,084.08/21,011.63
  6. Step 6: Final answer
    x = 9,324.46

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1.5x scale

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.