Home / 30,151.81-45,231.83-10,425.07

Finding the Fourth Proportional to 30,151.81, 45,231.83 and 10,425.07

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Solution

The fourth proportional to 30,151.81, 45,231.83 and 10,425.07 is: 15,639.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.81 : 45,231.83 = 10,425.07 : x
  2. Step 2: Convert to fraction form
    30,151.81/45,231.83 = 10,425.07/x
  3. Step 3: Cross multiply
    30,151.81x = 45,231.83 × 10,425.07
  4. Step 4: Simplify right side
    30,151.81x = 471,544,715.69
  5. Step 5: Solve for x
    x = 471,544,715.69/30,151.81
  6. Step 6: Final answer
    x = 15,639.02

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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.