Home / 13,666.53-20,499.86-4,307.28

Finding the Fourth Proportional to 13,666.53, 20,499.86 and 4,307.28

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Solution

The fourth proportional to 13,666.53, 20,499.86 and 4,307.28 is: 6,460.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,666.53 : 20,499.86 = 4,307.28 : x
  2. Step 2: Convert to fraction form
    13,666.53/20,499.86 = 4,307.28/x
  3. Step 3: Cross multiply
    13,666.53x = 20,499.86 × 4,307.28
  4. Step 4: Simplify right side
    13,666.53x = 88,298,631.60
  5. Step 5: Solve for x
    x = 88,298,631.60/13,666.53
  6. Step 6: Final answer
    x = 6,460.94

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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.