Home / 30,679.84-46,020.78-8,491.36

Finding the Fourth Proportional to 30,679.84, 46,020.78 and 8,491.36

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Solution

The fourth proportional to 30,679.84, 46,020.78 and 8,491.36 is: 12,737.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,679.84 : 46,020.78 = 8,491.36 : x
  2. Step 2: Convert to fraction form
    30,679.84/46,020.78 = 8,491.36/x
  3. Step 3: Cross multiply
    30,679.84x = 46,020.78 × 8,491.36
  4. Step 4: Simplify right side
    30,679.84x = 390,779,010.46
  5. Step 5: Solve for x
    x = 390,779,010.46/30,679.84
  6. Step 6: Final answer
    x = 12,737.32

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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.