Home / 19,322.30-28,810.37-18,972.38

Finding the Fourth Proportional to 19,322.30, 28,810.37 and 18,972.38

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Solution

The fourth proportional to 19,322.30, 28,810.37 and 18,972.38 is: 28,288.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,322.30 : 28,810.37 = 18,972.38 : x
  2. Step 2: Convert to fraction form
    19,322.30/28,810.37 = 18,972.38/x
  3. Step 3: Cross multiply
    19,322.30x = 28,810.37 × 18,972.38
  4. Step 4: Simplify right side
    19,322.30x = 546,601,119.81
  5. Step 5: Solve for x
    x = 546,601,119.81/19,322.30
  6. Step 6: Final answer
    x = 28,288.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.