Home / 28,967.63-39,970.70-16,221.36

Finding the Fourth Proportional to 28,967.63, 39,970.70 and 16,221.36

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Solution

The fourth proportional to 28,967.63, 39,970.70 and 16,221.36 is: 22,382.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,967.63 : 39,970.70 = 16,221.36 : x
  2. Step 2: Convert to fraction form
    28,967.63/39,970.70 = 16,221.36/x
  3. Step 3: Cross multiply
    28,967.63x = 39,970.70 × 16,221.36
  4. Step 4: Simplify right side
    28,967.63x = 648,379,243.77
  5. Step 5: Solve for x
    x = 648,379,243.77/28,967.63
  6. Step 6: Final answer
    x = 22,382.89

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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.