Home / 30,387.21-45,565.02-13,739.28

Finding the Fourth Proportional to 30,387.21, 45,565.02 and 13,739.28

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Solution

The fourth proportional to 30,387.21, 45,565.02 and 13,739.28 is: 20,601.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,387.21 : 45,565.02 = 13,739.28 : x
  2. Step 2: Convert to fraction form
    30,387.21/45,565.02 = 13,739.28/x
  3. Step 3: Cross multiply
    30,387.21x = 45,565.02 × 13,739.28
  4. Step 4: Simplify right side
    30,387.21x = 626,030,567.99
  5. Step 5: Solve for x
    x = 626,030,567.99/30,387.21
  6. Step 6: Final answer
    x = 20,601.78

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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.