Home / 20,322.87-28,045.31-11,370.34

Finding the Fourth Proportional to 20,322.87, 28,045.31 and 11,370.34

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Solution

The fourth proportional to 20,322.87, 28,045.31 and 11,370.34 is: 15,690.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.87 : 28,045.31 = 11,370.34 : x
  2. Step 2: Convert to fraction form
    20,322.87/28,045.31 = 11,370.34/x
  3. Step 3: Cross multiply
    20,322.87x = 28,045.31 × 11,370.34
  4. Step 4: Simplify right side
    20,322.87x = 318,884,710.11
  5. Step 5: Solve for x
    x = 318,884,710.11/20,322.87
  6. Step 6: Final answer
    x = 15,690.93

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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.