Home / 35,142.12-52,720.20-12,955.59

Finding the Fourth Proportional to 35,142.12, 52,720.20 and 12,955.59

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Solution

The fourth proportional to 35,142.12, 52,720.20 and 12,955.59 is: 19,435.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,142.12 : 52,720.20 = 12,955.59 : x
  2. Step 2: Convert to fraction form
    35,142.12/52,720.20 = 12,955.59/x
  3. Step 3: Cross multiply
    35,142.12x = 52,720.20 × 12,955.59
  4. Step 4: Simplify right side
    35,142.12x = 683,021,295.92
  5. Step 5: Solve for x
    x = 683,021,295.92/35,142.12
  6. Step 6: Final answer
    x = 19,435.97

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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.