Home / 20,036.72-27,777.11-18,970.21

Finding the Fourth Proportional to 20,036.72, 27,777.11 and 18,970.21

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Solution

The fourth proportional to 20,036.72, 27,777.11 and 18,970.21 is: 26,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,036.72 : 27,777.11 = 18,970.21 : x
  2. Step 2: Convert to fraction form
    20,036.72/27,777.11 = 18,970.21/x
  3. Step 3: Cross multiply
    20,036.72x = 27,777.11 × 18,970.21
  4. Step 4: Simplify right side
    20,036.72x = 526,937,609.89
  5. Step 5: Solve for x
    x = 526,937,609.89/20,036.72
  6. Step 6: Final answer
    x = 26,298.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.