Home / 30,215.11-45,307.10-13,560.86

Finding the Fourth Proportional to 30,215.11, 45,307.10 and 13,560.86

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Solution

The fourth proportional to 30,215.11, 45,307.10 and 13,560.86 is: 20,334.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.11 : 45,307.10 = 13,560.86 : x
  2. Step 2: Convert to fraction form
    30,215.11/45,307.10 = 13,560.86/x
  3. Step 3: Cross multiply
    30,215.11x = 45,307.10 × 13,560.86
  4. Step 4: Simplify right side
    30,215.11x = 614,403,172.30
  5. Step 5: Solve for x
    x = 614,403,172.30/30,215.11
  6. Step 6: Final answer
    x = 20,334.31

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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.