Home / 12,357.36-18,536.76-5,430.96

Finding the Fourth Proportional to 12,357.36, 18,536.76 and 5,430.96

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Solution

The fourth proportional to 12,357.36, 18,536.76 and 5,430.96 is: 8,146.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,357.36 : 18,536.76 = 5,430.96 : x
  2. Step 2: Convert to fraction form
    12,357.36/18,536.76 = 5,430.96/x
  3. Step 3: Cross multiply
    12,357.36x = 18,536.76 × 5,430.96
  4. Step 4: Simplify right side
    12,357.36x = 100,672,402.09
  5. Step 5: Solve for x
    x = 100,672,402.09/12,357.36
  6. Step 6: Final answer
    x = 8,146.76

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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.