Home / 18,765.12-25,866.09-14,779.92

Finding the Fourth Proportional to 18,765.12, 25,866.09 and 14,779.92

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Solution

The fourth proportional to 18,765.12, 25,866.09 and 14,779.92 is: 20,372.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.12 : 25,866.09 = 14,779.92 : x
  2. Step 2: Convert to fraction form
    18,765.12/25,866.09 = 14,779.92/x
  3. Step 3: Cross multiply
    18,765.12x = 25,866.09 × 14,779.92
  4. Step 4: Simplify right side
    18,765.12x = 382,298,740.91
  5. Step 5: Solve for x
    x = 382,298,740.91/18,765.12
  6. Step 6: Final answer
    x = 20,372.84

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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.