Home / 30,287.52-45,406.43-13,642.56

Finding the Fourth Proportional to 30,287.52, 45,406.43 and 13,642.56

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Solution

The fourth proportional to 30,287.52, 45,406.43 and 13,642.56 is: 20,452.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.52 : 45,406.43 = 13,642.56 : x
  2. Step 2: Convert to fraction form
    30,287.52/45,406.43 = 13,642.56/x
  3. Step 3: Cross multiply
    30,287.52x = 45,406.43 × 13,642.56
  4. Step 4: Simplify right side
    30,287.52x = 619,459,718.63
  5. Step 5: Solve for x
    x = 619,459,718.63/30,287.52
  6. Step 6: Final answer
    x = 20,452.64

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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.