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Finding the Fourth Proportional to 25,969.79, 38,931.32 and 9,325.91

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Solution

The fourth proportional to 25,969.79, 38,931.32 and 9,325.91 is: 13,980.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,969.79 : 38,931.32 = 9,325.91 : x
  2. Step 2: Convert to fraction form
    25,969.79/38,931.32 = 9,325.91/x
  3. Step 3: Cross multiply
    25,969.79x = 38,931.32 × 9,325.91
  4. Step 4: Simplify right side
    25,969.79x = 363,069,745.22
  5. Step 5: Solve for x
    x = 363,069,745.22/25,969.79
  6. Step 6: Final answer
    x = 13,980.47

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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.