Home / 12,339.90-18,529.65-11,430.30

Finding the Fourth Proportional to 12,339.90, 18,529.65 and 11,430.30

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Solution

The fourth proportional to 12,339.90, 18,529.65 and 11,430.30 is: 17,163.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,339.90 : 18,529.65 = 11,430.30 : x
  2. Step 2: Convert to fraction form
    12,339.90/18,529.65 = 11,430.30/x
  3. Step 3: Cross multiply
    12,339.90x = 18,529.65 × 11,430.30
  4. Step 4: Simplify right side
    12,339.90x = 211,799,458.40
  5. Step 5: Solve for x
    x = 211,799,458.40/12,339.90
  6. Step 6: Final answer
    x = 17,163.79

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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.