Home / 15,129,901.12-20,879,164.56-8,603,530.96

Finding the Fourth Proportional to 15,129,901.12, 20,879,164.56 and 8,603,530.96

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Solution

The fourth proportional to 15,129,901.12, 20,879,164.56 and 8,603,530.96 is: 11,872,816.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129,901.12 : 20,879,164.56 = 8,603,530.96 : x
  2. Step 2: Convert to fraction form
    15,129,901.12/20,879,164.56 = 8,603,530.96/x
  3. Step 3: Cross multiply
    15,129,901.12x = 20,879,164.56 × 8,603,530.96
  4. Step 4: Simplify right side
    15,129,901.12x = 179,634,538,710,894.78
  5. Step 5: Solve for x
    x = 179,634,538,710,894.78/15,129,901.12
  6. Step 6: Final answer
    x = 11,872,816.44

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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.