Home / 13,820.32-19,071.88-7,851.86

Finding the Fourth Proportional to 13,820.32, 19,071.88 and 7,851.86

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Solution

The fourth proportional to 13,820.32, 19,071.88 and 7,851.86 is: 10,835.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.32 : 19,071.88 = 7,851.86 : x
  2. Step 2: Convert to fraction form
    13,820.32/19,071.88 = 7,851.86/x
  3. Step 3: Cross multiply
    13,820.32x = 19,071.88 × 7,851.86
  4. Step 4: Simplify right side
    13,820.32x = 149,749,674.20
  5. Step 5: Solve for x
    x = 149,749,674.20/13,820.32
  6. Step 6: Final answer
    x = 10,835.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.