Home / 20,041.65-27,666.30-11,978.13

Finding the Fourth Proportional to 20,041.65, 27,666.30 and 11,978.13

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Solution

The fourth proportional to 20,041.65, 27,666.30 and 11,978.13 is: 16,535.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,041.65 : 27,666.30 = 11,978.13 : x
  2. Step 2: Convert to fraction form
    20,041.65/27,666.30 = 11,978.13/x
  3. Step 3: Cross multiply
    20,041.65x = 27,666.30 × 11,978.13
  4. Step 4: Simplify right side
    20,041.65x = 331,390,538.02
  5. Step 5: Solve for x
    x = 331,390,538.02/20,041.65
  6. Step 6: Final answer
    x = 16,535.09

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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.