Home / 19,012.84-28,521.11-4,972.80

Finding the Fourth Proportional to 19,012.84, 28,521.11 and 4,972.80

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Solution

The fourth proportional to 19,012.84, 28,521.11 and 4,972.80 is: 7,459.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,012.84 : 28,521.11 = 4,972.80 : x
  2. Step 2: Convert to fraction form
    19,012.84/28,521.11 = 4,972.80/x
  3. Step 3: Cross multiply
    19,012.84x = 28,521.11 × 4,972.80
  4. Step 4: Simplify right side
    19,012.84x = 141,829,775.81
  5. Step 5: Solve for x
    x = 141,829,775.81/19,012.84
  6. Step 6: Final answer
    x = 7,459.68

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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.