Home / 14,675.40-21,980.70-8,821.80

Finding the Fourth Proportional to 14,675.40, 21,980.70 and 8,821.80

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Solution

The fourth proportional to 14,675.40, 21,980.70 and 8,821.80 is: 13,213.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,675.40 : 21,980.70 = 8,821.80 : x
  2. Step 2: Convert to fraction form
    14,675.40/21,980.70 = 8,821.80/x
  3. Step 3: Cross multiply
    14,675.40x = 21,980.70 × 8,821.80
  4. Step 4: Simplify right side
    14,675.40x = 193,909,339.26
  5. Step 5: Solve for x
    x = 193,909,339.26/14,675.40
  6. Step 6: Final answer
    x = 13,213.22

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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.