Home / 12,148.89-18,225.77-4,358.31

Finding the Fourth Proportional to 12,148.89, 18,225.77 and 4,358.31

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Solution

The fourth proportional to 12,148.89, 18,225.77 and 4,358.31 is: 6,538.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.89 : 18,225.77 = 4,358.31 : x
  2. Step 2: Convert to fraction form
    12,148.89/18,225.77 = 4,358.31/x
  3. Step 3: Cross multiply
    12,148.89x = 18,225.77 × 4,358.31
  4. Step 4: Simplify right side
    12,148.89x = 79,433,533.86
  5. Step 5: Solve for x
    x = 79,433,533.86/12,148.89
  6. Step 6: Final answer
    x = 6,538.34

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1.5x scale

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.