Home / 30,110.56-45,155.76-10,388.56

Finding the Fourth Proportional to 30,110.56, 45,155.76 and 10,388.56

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Solution

The fourth proportional to 30,110.56, 45,155.76 and 10,388.56 is: 15,579.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,110.56 : 45,155.76 = 10,388.56 : x
  2. Step 2: Convert to fraction form
    30,110.56/45,155.76 = 10,388.56/x
  3. Step 3: Cross multiply
    30,110.56x = 45,155.76 × 10,388.56
  4. Step 4: Simplify right side
    30,110.56x = 469,103,322.11
  5. Step 5: Solve for x
    x = 469,103,322.11/30,110.56
  6. Step 6: Final answer
    x = 15,579.36

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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.