Home / 14,285.60-21,432.72-6,488

Finding the Fourth Proportional to 14,285.60, 21,432.72 and 6,488

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Solution

The fourth proportional to 14,285.60, 21,432.72 and 6,488 is: 9,733.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,285.60 : 21,432.72 = 6,488 : x
  2. Step 2: Convert to fraction form
    14,285.60/21,432.72 = 6,488/x
  3. Step 3: Cross multiply
    14,285.60x = 21,432.72 × 6,488
  4. Step 4: Simplify right side
    14,285.60x = 139,055,487.36
  5. Step 5: Solve for x
    x = 139,055,487.36/14,285.60
  6. Step 6: Final answer
    x = 9,733.96

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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.