Home / 30,139.23-45,208.83-10,147.04

Finding the Fourth Proportional to 30,139.23, 45,208.83 and 10,147.04

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Solution

The fourth proportional to 30,139.23, 45,208.83 and 10,147.04 is: 15,220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.23 : 45,208.83 = 10,147.04 : x
  2. Step 2: Convert to fraction form
    30,139.23/45,208.83 = 10,147.04/x
  3. Step 3: Cross multiply
    30,139.23x = 45,208.83 × 10,147.04
  4. Step 4: Simplify right side
    30,139.23x = 458,735,806.36
  5. Step 5: Solve for x
    x = 458,735,806.36/30,139.23
  6. Step 6: Final answer
    x = 15,220.55

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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.