Home / 20,538.19-30,658.71-18,047.05

Finding the Fourth Proportional to 20,538.19, 30,658.71 and 18,047.05

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Solution

The fourth proportional to 20,538.19, 30,658.71 and 18,047.05 is: 26,940.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.19 : 30,658.71 = 18,047.05 : x
  2. Step 2: Convert to fraction form
    20,538.19/30,658.71 = 18,047.05/x
  3. Step 3: Cross multiply
    20,538.19x = 30,658.71 × 18,047.05
  4. Step 4: Simplify right side
    20,538.19x = 553,299,385.03
  5. Step 5: Solve for x
    x = 553,299,385.03/20,538.19
  6. Step 6: Final answer
    x = 26,940.02

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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.