Home / 12,721,408.12-17,555,529.90-6,920,176

Finding the Fourth Proportional to 12,721,408.12, 17,555,529.90 and 6,920,176

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Solution

The fourth proportional to 12,721,408.12, 17,555,529.90 and 6,920,176 is: 9,549,835.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721,408.12 : 17,555,529.90 = 6,920,176 : x
  2. Step 2: Convert to fraction form
    12,721,408.12/17,555,529.90 = 6,920,176/x
  3. Step 3: Cross multiply
    12,721,408.12x = 17,555,529.90 × 6,920,176
  4. Step 4: Simplify right side
    12,721,408.12x = 121,487,356,681,262.39
  5. Step 5: Solve for x
    x = 121,487,356,681,262.39/12,721,408.12
  6. Step 6: Final answer
    x = 9,549,835.64

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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.