Home / 39,435.12-59,139.72-13,132.80

Finding the Fourth Proportional to 39,435.12, 59,139.72 and 13,132.80

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Solution

The fourth proportional to 39,435.12, 59,139.72 and 13,132.80 is: 19,694.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,435.12 : 59,139.72 = 13,132.80 : x
  2. Step 2: Convert to fraction form
    39,435.12/59,139.72 = 13,132.80/x
  3. Step 3: Cross multiply
    39,435.12x = 59,139.72 × 13,132.80
  4. Step 4: Simplify right side
    39,435.12x = 776,670,114.82
  5. Step 5: Solve for x
    x = 776,670,114.82/39,435.12
  6. Step 6: Final answer
    x = 19,694.88

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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.