Home / 20,386,648.21-28,133,566.39-11,219,290.96

Finding the Fourth Proportional to 20,386,648.21, 28,133,566.39 and 11,219,290.96

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Solution

The fourth proportional to 20,386,648.21, 28,133,566.39 and 11,219,290.96 is: 15,482,617.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,648.21 : 28,133,566.39 = 11,219,290.96 : x
  2. Step 2: Convert to fraction form
    20,386,648.21/28,133,566.39 = 11,219,290.96/x
  3. Step 3: Cross multiply
    20,386,648.21x = 28,133,566.39 × 11,219,290.96
  4. Step 4: Simplify right side
    20,386,648.21x = 315,638,667,071,886.88
  5. Step 5: Solve for x
    x = 315,638,667,071,886.88/20,386,648.21
  6. Step 6: Final answer
    x = 15,482,617.05

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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.