Home / 18,868.23-28,302.75-5,720.58

Finding the Fourth Proportional to 18,868.23, 28,302.75 and 5,720.58

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Solution

The fourth proportional to 18,868.23, 28,302.75 and 5,720.58 is: 8,580.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.23 : 28,302.75 = 5,720.58 : x
  2. Step 2: Convert to fraction form
    18,868.23/28,302.75 = 5,720.58/x
  3. Step 3: Cross multiply
    18,868.23x = 28,302.75 × 5,720.58
  4. Step 4: Simplify right side
    18,868.23x = 161,908,145.60
  5. Step 5: Solve for x
    x = 161,908,145.60/18,868.23
  6. Step 6: Final answer
    x = 8,580.99

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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.