Home / 10,129,671.40-15,185,992.14-8,205,811.93

Finding the Fourth Proportional to 10,129,671.40, 15,185,992.14 and 8,205,811.93

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Solution

The fourth proportional to 10,129,671.40, 15,185,992.14 and 8,205,811.93 is: 12,301,820.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129,671.40 : 15,185,992.14 = 8,205,811.93 : x
  2. Step 2: Convert to fraction form
    10,129,671.40/15,185,992.14 = 8,205,811.93/x
  3. Step 3: Cross multiply
    10,129,671.40x = 15,185,992.14 × 8,205,811.93
  4. Step 4: Simplify right side
    10,129,671.40x = 124,613,395,354,339.20
  5. Step 5: Solve for x
    x = 124,613,395,354,339.20/10,129,671.40
  6. Step 6: Final answer
    x = 12,301,820.11

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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.