Home / 30,120.68-45,181.40-7,934.24

Finding the Fourth Proportional to 30,120.68, 45,181.40 and 7,934.24

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Solution

The fourth proportional to 30,120.68, 45,181.40 and 7,934.24 is: 11,901.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.68 : 45,181.40 = 7,934.24 : x
  2. Step 2: Convert to fraction form
    30,120.68/45,181.40 = 7,934.24/x
  3. Step 3: Cross multiply
    30,120.68x = 45,181.40 × 7,934.24
  4. Step 4: Simplify right side
    30,120.68x = 358,480,071.14
  5. Step 5: Solve for x
    x = 358,480,071.14/30,120.68
  6. Step 6: Final answer
    x = 11,901.46

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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.