Home / 20,187.10-30,298.65-11,856.70

Finding the Fourth Proportional to 20,187.10, 30,298.65 and 11,856.70

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Solution

The fourth proportional to 20,187.10, 30,298.65 and 11,856.70 is: 17,795.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.10 : 30,298.65 = 11,856.70 : x
  2. Step 2: Convert to fraction form
    20,187.10/30,298.65 = 11,856.70/x
  3. Step 3: Cross multiply
    20,187.10x = 30,298.65 × 11,856.70
  4. Step 4: Simplify right side
    20,187.10x = 359,242,003.46
  5. Step 5: Solve for x
    x = 359,242,003.46/20,187.10
  6. Step 6: Final answer
    x = 17,795.62

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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.