Home / 30,143.16-45,215.82-12,588.84

Finding the Fourth Proportional to 30,143.16, 45,215.82 and 12,588.84

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Solution

The fourth proportional to 30,143.16, 45,215.82 and 12,588.84 is: 18,883.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,143.16 : 45,215.82 = 12,588.84 : x
  2. Step 2: Convert to fraction form
    30,143.16/45,215.82 = 12,588.84/x
  3. Step 3: Cross multiply
    30,143.16x = 45,215.82 × 12,588.84
  4. Step 4: Simplify right side
    30,143.16x = 569,214,723.45
  5. Step 5: Solve for x
    x = 569,214,723.45/30,143.16
  6. Step 6: Final answer
    x = 18,883.71

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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.