Home / 30,079.77-45,119.88-13,440.57

Finding the Fourth Proportional to 30,079.77, 45,119.88 and 13,440.57

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Solution

The fourth proportional to 30,079.77, 45,119.88 and 13,440.57 is: 20,160.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,079.77 : 45,119.88 = 13,440.57 : x
  2. Step 2: Convert to fraction form
    30,079.77/45,119.88 = 13,440.57/x
  3. Step 3: Cross multiply
    30,079.77x = 45,119.88 × 13,440.57
  4. Step 4: Simplify right side
    30,079.77x = 606,436,905.53
  5. Step 5: Solve for x
    x = 606,436,905.53/30,079.77
  6. Step 6: Final answer
    x = 20,160.96

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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.