Home / 19,660.18-27,130.40-11,485.30

Finding the Fourth Proportional to 19,660.18, 27,130.40 and 11,485.30

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Solution

The fourth proportional to 19,660.18, 27,130.40 and 11,485.30 is: 15,849.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,660.18 : 27,130.40 = 11,485.30 : x
  2. Step 2: Convert to fraction form
    19,660.18/27,130.40 = 11,485.30/x
  3. Step 3: Cross multiply
    19,660.18x = 27,130.40 × 11,485.30
  4. Step 4: Simplify right side
    19,660.18x = 311,600,783.12
  5. Step 5: Solve for x
    x = 311,600,783.12/19,660.18
  6. Step 6: Final answer
    x = 15,849.34

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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.