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Finding the Fourth Proportional to 25,308.21, 37,965.95 and 7,779.51

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Solution

The fourth proportional to 25,308.21, 37,965.95 and 7,779.51 is: 11,670.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,308.21 : 37,965.95 = 7,779.51 : x
  2. Step 2: Convert to fraction form
    25,308.21/37,965.95 = 7,779.51/x
  3. Step 3: Cross multiply
    25,308.21x = 37,965.95 × 7,779.51
  4. Step 4: Simplify right side
    25,308.21x = 295,356,448.79
  5. Step 5: Solve for x
    x = 295,356,448.79/25,308.21
  6. Step 6: Final answer
    x = 11,670.38

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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.