Home / 30,138.90-45,215.46-10,417.62

Finding the Fourth Proportional to 30,138.90, 45,215.46 and 10,417.62

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Solution

The fourth proportional to 30,138.90, 45,215.46 and 10,417.62 is: 15,628.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,138.90 : 45,215.46 = 10,417.62 : x
  2. Step 2: Convert to fraction form
    30,138.90/45,215.46 = 10,417.62/x
  3. Step 3: Cross multiply
    30,138.90x = 45,215.46 × 10,417.62
  4. Step 4: Simplify right side
    30,138.90x = 471,037,480.41
  5. Step 5: Solve for x
    x = 471,037,480.41/30,138.90
  6. Step 6: Final answer
    x = 15,628.89

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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.