Home / 13,296.61-18,357.20-11,820.52

Finding the Fourth Proportional to 13,296.61, 18,357.20 and 11,820.52

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Solution

The fourth proportional to 13,296.61, 18,357.20 and 11,820.52 is: 16,319.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,296.61 : 18,357.20 = 11,820.52 : x
  2. Step 2: Convert to fraction form
    13,296.61/18,357.20 = 11,820.52/x
  3. Step 3: Cross multiply
    13,296.61x = 18,357.20 × 11,820.52
  4. Step 4: Simplify right side
    13,296.61x = 216,991,649.74
  5. Step 5: Solve for x
    x = 216,991,649.74/13,296.61
  6. Step 6: Final answer
    x = 16,319.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.