Home / 13,518,272.32-18,654,814.56-7,716,909.76

Finding the Fourth Proportional to 13,518,272.32, 18,654,814.56 and 7,716,909.76

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Solution

The fourth proportional to 13,518,272.32, 18,654,814.56 and 7,716,909.76 is: 10,649,106.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518,272.32 : 18,654,814.56 = 7,716,909.76 : x
  2. Step 2: Convert to fraction form
    13,518,272.32/18,654,814.56 = 7,716,909.76/x
  3. Step 3: Cross multiply
    13,518,272.32x = 18,654,814.56 × 7,716,909.76
  4. Step 4: Simplify right side
    13,518,272.32x = 143,957,520,549,054.09
  5. Step 5: Solve for x
    x = 143,957,520,549,054.09/13,518,272.32
  6. Step 6: Final answer
    x = 10,649,106.42

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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.