Home / 20,859.63-31,298.40-13,842.09

Finding the Fourth Proportional to 20,859.63, 31,298.40 and 13,842.09

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Solution

The fourth proportional to 20,859.63, 31,298.40 and 13,842.09 is: 20,769.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.63 : 31,298.40 = 13,842.09 : x
  2. Step 2: Convert to fraction form
    20,859.63/31,298.40 = 13,842.09/x
  3. Step 3: Cross multiply
    20,859.63x = 31,298.40 × 13,842.09
  4. Step 4: Simplify right side
    20,859.63x = 433,235,311.98
  5. Step 5: Solve for x
    x = 433,235,311.98/20,859.63
  6. Step 6: Final answer
    x = 20,769.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.