Home / 20,779.68-28,634.76-14,800.80

Finding the Fourth Proportional to 20,779.68, 28,634.76 and 14,800.80

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Solution

The fourth proportional to 20,779.68, 28,634.76 and 14,800.80 is: 20,395.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.68 : 28,634.76 = 14,800.80 : x
  2. Step 2: Convert to fraction form
    20,779.68/28,634.76 = 14,800.80/x
  3. Step 3: Cross multiply
    20,779.68x = 28,634.76 × 14,800.80
  4. Step 4: Simplify right side
    20,779.68x = 423,817,355.81
  5. Step 5: Solve for x
    x = 423,817,355.81/20,779.68
  6. Step 6: Final answer
    x = 20,395.76

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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.