Home / 30,123.83-45,185.06-10,400.54

Finding the Fourth Proportional to 30,123.83, 45,185.06 and 10,400.54

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Solution

The fourth proportional to 30,123.83, 45,185.06 and 10,400.54 is: 15,600.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,123.83 : 45,185.06 = 10,400.54 : x
  2. Step 2: Convert to fraction form
    30,123.83/45,185.06 = 10,400.54/x
  3. Step 3: Cross multiply
    30,123.83x = 45,185.06 × 10,400.54
  4. Step 4: Simplify right side
    30,123.83x = 469,948,746.00
  5. Step 5: Solve for x
    x = 469,948,746.00/30,123.83
  6. Step 6: Final answer
    x = 15,600.57

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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.