Home / 30,129.32-45,179.40-10,400.96

Finding the Fourth Proportional to 30,129.32, 45,179.40 and 10,400.96

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Solution

The fourth proportional to 30,129.32, 45,179.40 and 10,400.96 is: 15,596.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,129.32 : 45,179.40 = 10,400.96 : x
  2. Step 2: Convert to fraction form
    30,129.32/45,179.40 = 10,400.96/x
  3. Step 3: Cross multiply
    30,129.32x = 45,179.40 × 10,400.96
  4. Step 4: Simplify right side
    30,129.32x = 469,909,132.22
  5. Step 5: Solve for x
    x = 469,909,132.22/30,129.32
  6. Step 6: Final answer
    x = 15,596.41

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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.