Home / 20,210.10-30,257.55-12,434.10

Finding the Fourth Proportional to 20,210.10, 30,257.55 and 12,434.10

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Solution

The fourth proportional to 20,210.10, 30,257.55 and 12,434.10 is: 18,615.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.10 : 30,257.55 = 12,434.10 : x
  2. Step 2: Convert to fraction form
    20,210.10/30,257.55 = 12,434.10/x
  3. Step 3: Cross multiply
    20,210.10x = 30,257.55 × 12,434.10
  4. Step 4: Simplify right side
    20,210.10x = 376,225,402.46
  5. Step 5: Solve for x
    x = 376,225,402.46/20,210.10
  6. Step 6: Final answer
    x = 18,615.71

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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.