Home / 20,860.08-31,269.06-13,074.36

Finding the Fourth Proportional to 20,860.08, 31,269.06 and 13,074.36

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Solution

The fourth proportional to 20,860.08, 31,269.06 and 13,074.36 is: 19,598.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,860.08 : 31,269.06 = 13,074.36 : x
  2. Step 2: Convert to fraction form
    20,860.08/31,269.06 = 13,074.36/x
  3. Step 3: Cross multiply
    20,860.08x = 31,269.06 × 13,074.36
  4. Step 4: Simplify right side
    20,860.08x = 408,822,947.30
  5. Step 5: Solve for x
    x = 408,822,947.30/20,860.08
  6. Step 6: Final answer
    x = 19,598.34

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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.