Home / 30,750.30-42,412.68-18,803.88

Finding the Fourth Proportional to 30,750.30, 42,412.68 and 18,803.88

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Solution

The fourth proportional to 30,750.30, 42,412.68 and 18,803.88 is: 25,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,750.30 : 42,412.68 = 18,803.88 : x
  2. Step 2: Convert to fraction form
    30,750.30/42,412.68 = 18,803.88/x
  3. Step 3: Cross multiply
    30,750.30x = 42,412.68 × 18,803.88
  4. Step 4: Simplify right side
    30,750.30x = 797,522,945.20
  5. Step 5: Solve for x
    x = 797,522,945.20/30,750.30
  6. Step 6: Final answer
    x = 25,935.45

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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.