Home / 21,003.11-31,510.40-6,212.01

Finding the Fourth Proportional to 21,003.11, 31,510.40 and 6,212.01

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Solution

The fourth proportional to 21,003.11, 31,510.40 and 6,212.01 is: 9,319.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.11 : 31,510.40 = 6,212.01 : x
  2. Step 2: Convert to fraction form
    21,003.11/31,510.40 = 6,212.01/x
  3. Step 3: Cross multiply
    21,003.11x = 31,510.40 × 6,212.01
  4. Step 4: Simplify right side
    21,003.11x = 195,742,888.84
  5. Step 5: Solve for x
    x = 195,742,888.84/21,003.11
  6. Step 6: Final answer
    x = 9,319.71

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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.