Home / 30,172.17-45,240.60-9,105.89

Finding the Fourth Proportional to 30,172.17, 45,240.60 and 9,105.89

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Solution

The fourth proportional to 30,172.17, 45,240.60 and 9,105.89 is: 13,653.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,172.17 : 45,240.60 = 9,105.89 : x
  2. Step 2: Convert to fraction form
    30,172.17/45,240.60 = 9,105.89/x
  3. Step 3: Cross multiply
    30,172.17x = 45,240.60 × 9,105.89
  4. Step 4: Simplify right side
    30,172.17x = 411,955,700.93
  5. Step 5: Solve for x
    x = 411,955,700.93/30,172.17
  6. Step 6: Final answer
    x = 13,653.50

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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.