Home / 20,401,281.32-28,152,667.12-11,699,820.68

Finding the Fourth Proportional to 20,401,281.32, 28,152,667.12 and 11,699,820.68

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Solution

The fourth proportional to 20,401,281.32, 28,152,667.12 and 11,699,820.68 is: 16,145,121.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401,281.32 : 28,152,667.12 = 11,699,820.68 : x
  2. Step 2: Convert to fraction form
    20,401,281.32/28,152,667.12 = 11,699,820.68/x
  3. Step 3: Cross multiply
    20,401,281.32x = 28,152,667.12 × 11,699,820.68
  4. Step 4: Simplify right side
    20,401,281.32x = 329,381,156,967,732.06
  5. Step 5: Solve for x
    x = 329,381,156,967,732.06/20,401,281.32
  6. Step 6: Final answer
    x = 16,145,121.07

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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.