Home / 21,470.14-29,628.75-12,038.50

Finding the Fourth Proportional to 21,470.14, 29,628.75 and 12,038.50

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Solution

The fourth proportional to 21,470.14, 29,628.75 and 12,038.50 is: 16,613.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.14 : 29,628.75 = 12,038.50 : x
  2. Step 2: Convert to fraction form
    21,470.14/29,628.75 = 12,038.50/x
  3. Step 3: Cross multiply
    21,470.14x = 29,628.75 × 12,038.50
  4. Step 4: Simplify right side
    21,470.14x = 356,685,706.88
  5. Step 5: Solve for x
    x = 356,685,706.88/21,470.14
  6. Step 6: Final answer
    x = 16,613.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.