Home / 30,429.20-45,643.90-9,369.12

Finding the Fourth Proportional to 30,429.20, 45,643.90 and 9,369.12

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Solution

The fourth proportional to 30,429.20, 45,643.90 and 9,369.12 is: 14,053.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,429.20 : 45,643.90 = 9,369.12 : x
  2. Step 2: Convert to fraction form
    30,429.20/45,643.90 = 9,369.12/x
  3. Step 3: Cross multiply
    30,429.20x = 45,643.90 × 9,369.12
  4. Step 4: Simplify right side
    30,429.20x = 427,643,176.37
  5. Step 5: Solve for x
    x = 427,643,176.37/30,429.20
  6. Step 6: Final answer
    x = 14,053.71

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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.