Home / 21,779.73-30,065.22-14,715.72

Finding the Fourth Proportional to 21,779.73, 30,065.22 and 14,715.72

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Solution

The fourth proportional to 21,779.73, 30,065.22 and 14,715.72 is: 20,313.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.73 : 30,065.22 = 14,715.72 : x
  2. Step 2: Convert to fraction form
    21,779.73/30,065.22 = 14,715.72/x
  3. Step 3: Cross multiply
    21,779.73x = 30,065.22 × 14,715.72
  4. Step 4: Simplify right side
    21,779.73x = 442,431,359.26
  5. Step 5: Solve for x
    x = 442,431,359.26/21,779.73
  6. Step 6: Final answer
    x = 20,313.90

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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.