Home / 30,215.36-45,307.47-13,561.11

Finding the Fourth Proportional to 30,215.36, 45,307.47 and 13,561.11

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Solution

The fourth proportional to 30,215.36, 45,307.47 and 13,561.11 is: 20,334.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.36 : 45,307.47 = 13,561.11 : x
  2. Step 2: Convert to fraction form
    30,215.36/45,307.47 = 13,561.11/x
  3. Step 3: Cross multiply
    30,215.36x = 45,307.47 × 13,561.11
  4. Step 4: Simplify right side
    30,215.36x = 614,419,584.49
  5. Step 5: Solve for x
    x = 614,419,584.49/30,215.36
  6. Step 6: Final answer
    x = 20,334.68

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1.5x scale

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.