Home / 30,160.72-45,248.03-10,439.28

Finding the Fourth Proportional to 30,160.72, 45,248.03 and 10,439.28

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Solution

The fourth proportional to 30,160.72, 45,248.03 and 10,439.28 is: 15,661.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,160.72 : 45,248.03 = 10,439.28 : x
  2. Step 2: Convert to fraction form
    30,160.72/45,248.03 = 10,439.28/x
  3. Step 3: Cross multiply
    30,160.72x = 45,248.03 × 10,439.28
  4. Step 4: Simplify right side
    30,160.72x = 472,356,854.62
  5. Step 5: Solve for x
    x = 472,356,854.62/30,160.72
  6. Step 6: Final answer
    x = 15,661.33

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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.