Home / 16,931.27-25,403.59-5,245.40

Finding the Fourth Proportional to 16,931.27, 25,403.59 and 5,245.40

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Solution

The fourth proportional to 16,931.27, 25,403.59 and 5,245.40 is: 7,870.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,931.27 : 25,403.59 = 5,245.40 : x
  2. Step 2: Convert to fraction form
    16,931.27/25,403.59 = 5,245.40/x
  3. Step 3: Cross multiply
    16,931.27x = 25,403.59 × 5,245.40
  4. Step 4: Simplify right side
    16,931.27x = 133,251,990.99
  5. Step 5: Solve for x
    x = 133,251,990.99/16,931.27
  6. Step 6: Final answer
    x = 7,870.17

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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.