Home / 15,421.45-23,118-5,558.32

Finding the Fourth Proportional to 15,421.45, 23,118 and 5,558.32

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Solution

The fourth proportional to 15,421.45, 23,118 and 5,558.32 is: 8,332.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,421.45 : 23,118 = 5,558.32 : x
  2. Step 2: Convert to fraction form
    15,421.45/23,118 = 5,558.32/x
  3. Step 3: Cross multiply
    15,421.45x = 23,118 × 5,558.32
  4. Step 4: Simplify right side
    15,421.45x = 128,497,241.76
  5. Step 5: Solve for x
    x = 128,497,241.76/15,421.45
  6. Step 6: Final answer
    x = 8,332.37

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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.