Home / 30,150.79-45,226.15-10,429.49

Finding the Fourth Proportional to 30,150.79, 45,226.15 and 10,429.49

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Solution

The fourth proportional to 30,150.79, 45,226.15 and 10,429.49 is: 15,644.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,150.79 : 45,226.15 = 10,429.49 : x
  2. Step 2: Convert to fraction form
    30,150.79/45,226.15 = 10,429.49/x
  3. Step 3: Cross multiply
    30,150.79x = 45,226.15 × 10,429.49
  4. Step 4: Simplify right side
    30,150.79x = 471,685,679.16
  5. Step 5: Solve for x
    x = 471,685,679.16/30,150.79
  6. Step 6: Final answer
    x = 15,644.22

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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.