Home / 21,424.70-29,558.93-12,470.30

Finding the Fourth Proportional to 21,424.70, 29,558.93 and 12,470.30

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Solution

The fourth proportional to 21,424.70, 29,558.93 and 12,470.30 is: 17,204.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.70 : 29,558.93 = 12,470.30 : x
  2. Step 2: Convert to fraction form
    21,424.70/29,558.93 = 12,470.30/x
  3. Step 3: Cross multiply
    21,424.70x = 29,558.93 × 12,470.30
  4. Step 4: Simplify right side
    21,424.70x = 368,608,829.85
  5. Step 5: Solve for x
    x = 368,608,829.85/21,424.70
  6. Step 6: Final answer
    x = 17,204.85

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1.5x scale

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.