Home / 42,739.32-64,115.16-13,149.24

Finding the Fourth Proportional to 42,739.32, 64,115.16 and 13,149.24

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Solution

The fourth proportional to 42,739.32, 64,115.16 and 13,149.24 is: 19,725.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,739.32 : 64,115.16 = 13,149.24 : x
  2. Step 2: Convert to fraction form
    42,739.32/64,115.16 = 13,149.24/x
  3. Step 3: Cross multiply
    42,739.32x = 64,115.16 × 13,149.24
  4. Step 4: Simplify right side
    42,739.32x = 843,065,626.48
  5. Step 5: Solve for x
    x = 843,065,626.48/42,739.32
  6. Step 6: Final answer
    x = 19,725.76

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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.