Home / 13,540,393.45-18,685,742.96-7,739,299.74

Finding the Fourth Proportional to 13,540,393.45, 18,685,742.96 and 7,739,299.74

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Solution

The fourth proportional to 13,540,393.45, 18,685,742.96 and 7,739,299.74 is: 10,680,233.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540,393.45 : 18,685,742.96 = 7,739,299.74 : x
  2. Step 2: Convert to fraction form
    13,540,393.45/18,685,742.96 = 7,739,299.74/x
  3. Step 3: Cross multiply
    13,540,393.45x = 18,685,742.96 × 7,739,299.74
  4. Step 4: Simplify right side
    13,540,393.45x = 144,614,565,628,374.09
  5. Step 5: Solve for x
    x = 144,614,565,628,374.09/13,540,393.45
  6. Step 6: Final answer
    x = 10,680,233.64

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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.