Home / 13,311.53-19,961.47-4,985.71

Finding the Fourth Proportional to 13,311.53, 19,961.47 and 4,985.71

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Solution

The fourth proportional to 13,311.53, 19,961.47 and 4,985.71 is: 7,476.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.53 : 19,961.47 = 4,985.71 : x
  2. Step 2: Convert to fraction form
    13,311.53/19,961.47 = 4,985.71/x
  3. Step 3: Cross multiply
    13,311.53x = 19,961.47 × 4,985.71
  4. Step 4: Simplify right side
    13,311.53x = 99,521,975.86
  5. Step 5: Solve for x
    x = 99,521,975.86/13,311.53
  6. Step 6: Final answer
    x = 7,476.37

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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.