Home / 21,002.69-31,510.18-6,211.99

Finding the Fourth Proportional to 21,002.69, 31,510.18 and 6,211.99

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Solution

The fourth proportional to 21,002.69, 31,510.18 and 6,211.99 is: 9,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,002.69 : 31,510.18 = 6,211.99 : x
  2. Step 2: Convert to fraction form
    21,002.69/31,510.18 = 6,211.99/x
  3. Step 3: Cross multiply
    21,002.69x = 31,510.18 × 6,211.99
  4. Step 4: Simplify right side
    21,002.69x = 195,740,923.06
  5. Step 5: Solve for x
    x = 195,740,923.06/21,002.69
  6. Step 6: Final answer
    x = 9,319.80

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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.