Home / 11,320.40-15,619.56-6,601.88

Finding the Fourth Proportional to 11,320.40, 15,619.56 and 6,601.88

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Solution

The fourth proportional to 11,320.40, 15,619.56 and 6,601.88 is: 9,109.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.40 : 15,619.56 = 6,601.88 : x
  2. Step 2: Convert to fraction form
    11,320.40/15,619.56 = 6,601.88/x
  3. Step 3: Cross multiply
    11,320.40x = 15,619.56 × 6,601.88
  4. Step 4: Simplify right side
    11,320.40x = 103,118,460.77
  5. Step 5: Solve for x
    x = 103,118,460.77/11,320.40
  6. Step 6: Final answer
    x = 9,109.08

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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.