Home / 21,813.12-30,111.08-14,749.04

Finding the Fourth Proportional to 21,813.12, 30,111.08 and 14,749.04

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Solution

The fourth proportional to 21,813.12, 30,111.08 and 14,749.04 is: 20,359.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,813.12 : 30,111.08 = 14,749.04 : x
  2. Step 2: Convert to fraction form
    21,813.12/30,111.08 = 14,749.04/x
  3. Step 3: Cross multiply
    21,813.12x = 30,111.08 × 14,749.04
  4. Step 4: Simplify right side
    21,813.12x = 444,109,523.36
  5. Step 5: Solve for x
    x = 444,109,523.36/21,813.12
  6. Step 6: Final answer
    x = 20,359.74

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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.