Home / 30,154.85-45,236.73-10,428.11

Finding the Fourth Proportional to 30,154.85, 45,236.73 and 10,428.11

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Solution

The fourth proportional to 30,154.85, 45,236.73 and 10,428.11 is: 15,643.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.85 : 45,236.73 = 10,428.11 : x
  2. Step 2: Convert to fraction form
    30,154.85/45,236.73 = 10,428.11/x
  3. Step 3: Cross multiply
    30,154.85x = 45,236.73 × 10,428.11
  4. Step 4: Simplify right side
    30,154.85x = 471,733,596.48
  5. Step 5: Solve for x
    x = 471,733,596.48/30,154.85
  6. Step 6: Final answer
    x = 15,643.71

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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.