Home / 30,113.12-45,172.75-10,391.62

Finding the Fourth Proportional to 30,113.12, 45,172.75 and 10,391.62

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Solution

The fourth proportional to 30,113.12, 45,172.75 and 10,391.62 is: 15,588.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,113.12 : 45,172.75 = 10,391.62 : x
  2. Step 2: Convert to fraction form
    30,113.12/45,172.75 = 10,391.62/x
  3. Step 3: Cross multiply
    30,113.12x = 45,172.75 × 10,391.62
  4. Step 4: Simplify right side
    30,113.12x = 469,418,052.36
  5. Step 5: Solve for x
    x = 469,418,052.36/30,113.12
  6. Step 6: Final answer
    x = 15,588.49

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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.