Home / 18,890.40-28,477.08-17,621.76

Finding the Fourth Proportional to 18,890.40, 28,477.08 and 17,621.76

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Solution

The fourth proportional to 18,890.40, 28,477.08 and 17,621.76 is: 26,564.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.40 : 28,477.08 = 17,621.76 : x
  2. Step 2: Convert to fraction form
    18,890.40/28,477.08 = 17,621.76/x
  3. Step 3: Cross multiply
    18,890.40x = 28,477.08 × 17,621.76
  4. Step 4: Simplify right side
    18,890.40x = 501,816,269.26
  5. Step 5: Solve for x
    x = 501,816,269.26/18,890.40
  6. Step 6: Final answer
    x = 26,564.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.