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Finding the Fourth Proportional to 20,397.58, 30,590.80 and 5,602.98

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Solution

The fourth proportional to 20,397.58, 30,590.80 and 5,602.98 is: 8,402.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.58 : 30,590.80 = 5,602.98 : x
  2. Step 2: Convert to fraction form
    20,397.58/30,590.80 = 5,602.98/x
  3. Step 3: Cross multiply
    20,397.58x = 30,590.80 × 5,602.98
  4. Step 4: Simplify right side
    20,397.58x = 171,399,459.62
  5. Step 5: Solve for x
    x = 171,399,459.62/20,397.58
  6. Step 6: Final answer
    x = 8,402.93

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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.