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Finding the Fourth Proportional to 25,339.72, 38,009.60 and 6,871.72

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Solution

The fourth proportional to 25,339.72, 38,009.60 and 6,871.72 is: 10,307.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,339.72 : 38,009.60 = 6,871.72 : x
  2. Step 2: Convert to fraction form
    25,339.72/38,009.60 = 6,871.72/x
  3. Step 3: Cross multiply
    25,339.72x = 38,009.60 × 6,871.72
  4. Step 4: Simplify right side
    25,339.72x = 261,191,328.51
  5. Step 5: Solve for x
    x = 261,191,328.51/25,339.72
  6. Step 6: Final answer
    x = 10,307.59

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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.