Home / 20,133.10-27,783.95-11,181.18

Finding the Fourth Proportional to 20,133.10, 27,783.95 and 11,181.18

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Solution

The fourth proportional to 20,133.10, 27,783.95 and 11,181.18 is: 15,430.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.10 : 27,783.95 = 11,181.18 : x
  2. Step 2: Convert to fraction form
    20,133.10/27,783.95 = 11,181.18/x
  3. Step 3: Cross multiply
    20,133.10x = 27,783.95 × 11,181.18
  4. Step 4: Simplify right side
    20,133.10x = 310,657,346.06
  5. Step 5: Solve for x
    x = 310,657,346.06/20,133.10
  6. Step 6: Final answer
    x = 15,430.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.