Home / 14,285.61-21,428.19-3,897.36

Finding the Fourth Proportional to 14,285.61, 21,428.19 and 3,897.36

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Solution

The fourth proportional to 14,285.61, 21,428.19 and 3,897.36 is: 5,845.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,285.61 : 21,428.19 = 3,897.36 : x
  2. Step 2: Convert to fraction form
    14,285.61/21,428.19 = 3,897.36/x
  3. Step 3: Cross multiply
    14,285.61x = 21,428.19 × 3,897.36
  4. Step 4: Simplify right side
    14,285.61x = 83,513,355.96
  5. Step 5: Solve for x
    x = 83,513,355.96/14,285.61
  6. Step 6: Final answer
    x = 5,845.98

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1.5x scale

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.