Home / 30,809.64-42,507.24-18,860.52

Finding the Fourth Proportional to 30,809.64, 42,507.24 and 18,860.52

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Solution

The fourth proportional to 30,809.64, 42,507.24 and 18,860.52 is: 26,021.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,809.64 : 42,507.24 = 18,860.52 : x
  2. Step 2: Convert to fraction form
    30,809.64/42,507.24 = 18,860.52/x
  3. Step 3: Cross multiply
    30,809.64x = 42,507.24 × 18,860.52
  4. Step 4: Simplify right side
    30,809.64x = 801,708,650.16
  5. Step 5: Solve for x
    x = 801,708,650.16/30,809.64
  6. Step 6: Final answer
    x = 26,021.36

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1.5x scale

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.