Home / 20,397.23-30,583.35-18,656.90

Finding the Fourth Proportional to 20,397.23, 30,583.35 and 18,656.90

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Solution

The fourth proportional to 20,397.23, 30,583.35 and 18,656.90 is: 27,973.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.23 : 30,583.35 = 18,656.90 : x
  2. Step 2: Convert to fraction form
    20,397.23/30,583.35 = 18,656.90/x
  3. Step 3: Cross multiply
    20,397.23x = 30,583.35 × 18,656.90
  4. Step 4: Simplify right side
    20,397.23x = 570,590,349.70
  5. Step 5: Solve for x
    x = 570,590,349.70/20,397.23
  6. Step 6: Final answer
    x = 27,973.92

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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.