Home / 12,530.55-18,795.78-5,135.01

Finding the Fourth Proportional to 12,530.55, 18,795.78 and 5,135.01

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Solution

The fourth proportional to 12,530.55, 18,795.78 and 5,135.01 is: 7,702.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,530.55 : 18,795.78 = 5,135.01 : x
  2. Step 2: Convert to fraction form
    12,530.55/18,795.78 = 5,135.01/x
  3. Step 3: Cross multiply
    12,530.55x = 18,795.78 × 5,135.01
  4. Step 4: Simplify right side
    12,530.55x = 96,516,518.26
  5. Step 5: Solve for x
    x = 96,516,518.26/12,530.55
  6. Step 6: Final answer
    x = 7,702.50

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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.