Home / 30,491.45-45,742.31-10,500.15

Finding the Fourth Proportional to 30,491.45, 45,742.31 and 10,500.15

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Solution

The fourth proportional to 30,491.45, 45,742.31 and 10,500.15 is: 15,751.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,491.45 : 45,742.31 = 10,500.15 : x
  2. Step 2: Convert to fraction form
    30,491.45/45,742.31 = 10,500.15/x
  3. Step 3: Cross multiply
    30,491.45x = 45,742.31 × 10,500.15
  4. Step 4: Simplify right side
    30,491.45x = 480,300,931.69
  5. Step 5: Solve for x
    x = 480,300,931.69/30,491.45
  6. Step 6: Final answer
    x = 15,751.99

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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.