Home / 30,153.85-45,235.23-10,427.11

Finding the Fourth Proportional to 30,153.85, 45,235.23 and 10,427.11

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Solution

The fourth proportional to 30,153.85, 45,235.23 and 10,427.11 is: 15,642.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,153.85 : 45,235.23 = 10,427.11 : x
  2. Step 2: Convert to fraction form
    30,153.85/45,235.23 = 10,427.11/x
  3. Step 3: Cross multiply
    30,153.85x = 45,235.23 × 10,427.11
  4. Step 4: Simplify right side
    30,153.85x = 471,672,719.09
  5. Step 5: Solve for x
    x = 471,672,719.09/30,153.85
  6. Step 6: Final answer
    x = 15,642.21

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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.