Home / 13,695.76-20,543.69-3,307.51

Finding the Fourth Proportional to 13,695.76, 20,543.69 and 3,307.51

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Solution

The fourth proportional to 13,695.76, 20,543.69 and 3,307.51 is: 4,961.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.76 : 20,543.69 = 3,307.51 : x
  2. Step 2: Convert to fraction form
    13,695.76/20,543.69 = 3,307.51/x
  3. Step 3: Cross multiply
    13,695.76x = 20,543.69 × 3,307.51
  4. Step 4: Simplify right side
    13,695.76x = 67,948,460.11
  5. Step 5: Solve for x
    x = 67,948,460.11/13,695.76
  6. Step 6: Final answer
    x = 4,961.28

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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.