Home / 13,655.45-20,483.16-7,807.96

Finding the Fourth Proportional to 13,655.45, 20,483.16 and 7,807.96

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Solution

The fourth proportional to 13,655.45, 20,483.16 and 7,807.96 is: 11,711.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.45 : 20,483.16 = 7,807.96 : x
  2. Step 2: Convert to fraction form
    13,655.45/20,483.16 = 7,807.96/x
  3. Step 3: Cross multiply
    13,655.45x = 20,483.16 × 7,807.96
  4. Step 4: Simplify right side
    13,655.45x = 159,931,734.20
  5. Step 5: Solve for x
    x = 159,931,734.20/13,655.45
  6. Step 6: Final answer
    x = 11,711.93

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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.