Home / 25,421.28-38,134.48-8,779.12

Finding the Fourth Proportional to 25,421.28, 38,134.48 and 8,779.12

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Solution

The fourth proportional to 25,421.28, 38,134.48 and 8,779.12 is: 13,169.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,421.28 : 38,134.48 = 8,779.12 : x
  2. Step 2: Convert to fraction form
    25,421.28/38,134.48 = 8,779.12/x
  3. Step 3: Cross multiply
    25,421.28x = 38,134.48 × 8,779.12
  4. Step 4: Simplify right side
    25,421.28x = 334,787,176.06
  5. Step 5: Solve for x
    x = 334,787,176.06/25,421.28
  6. Step 6: Final answer
    x = 13,169.56

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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.