Home / 30,156.10-45,223.31-10,429.30

Finding the Fourth Proportional to 30,156.10, 45,223.31 and 10,429.30

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Solution

The fourth proportional to 30,156.10, 45,223.31 and 10,429.30 is: 15,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.10 : 45,223.31 = 10,429.30 : x
  2. Step 2: Convert to fraction form
    30,156.10/45,223.31 = 10,429.30/x
  3. Step 3: Cross multiply
    30,156.10x = 45,223.31 × 10,429.30
  4. Step 4: Simplify right side
    30,156.10x = 471,647,466.98
  5. Step 5: Solve for x
    x = 471,647,466.98/30,156.10
  6. Step 6: Final answer
    x = 15,640.20

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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.