Home / 20,210,513.85-30,320,199.45-9,980,274.60

Finding the Fourth Proportional to 20,210,513.85, 30,320,199.45 and 9,980,274.60

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Solution

The fourth proportional to 20,210,513.85, 30,320,199.45 and 9,980,274.60 is: 14,972,598.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210,513.85 : 30,320,199.45 = 9,980,274.60 : x
  2. Step 2: Convert to fraction form
    20,210,513.85/30,320,199.45 = 9,980,274.60/x
  3. Step 3: Cross multiply
    20,210,513.85x = 30,320,199.45 × 9,980,274.60
  4. Step 4: Simplify right side
    20,210,513.85x = 302,603,916,437,768.94
  5. Step 5: Solve for x
    x = 302,603,916,437,768.94/20,210,513.85
  6. Step 6: Final answer
    x = 14,972,598.85

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1.5x scale

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.