Home / 30,500.99-42,089.07-18,563.01

Finding the Fourth Proportional to 30,500.99, 42,089.07 and 18,563.01

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Solution

The fourth proportional to 30,500.99, 42,089.07 and 18,563.01 is: 25,615.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,500.99 : 42,089.07 = 18,563.01 : x
  2. Step 2: Convert to fraction form
    30,500.99/42,089.07 = 18,563.01/x
  3. Step 3: Cross multiply
    30,500.99x = 42,089.07 × 18,563.01
  4. Step 4: Simplify right side
    30,500.99x = 781,299,634.66
  5. Step 5: Solve for x
    x = 781,299,634.66/30,500.99
  6. Step 6: Final answer
    x = 25,615.55

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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.