Home / 21,678.98-32,520.87-8,529.62

Finding the Fourth Proportional to 21,678.98, 32,520.87 and 8,529.62

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Solution

The fourth proportional to 21,678.98, 32,520.87 and 8,529.62 is: 12,795.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,678.98 : 32,520.87 = 8,529.62 : x
  2. Step 2: Convert to fraction form
    21,678.98/32,520.87 = 8,529.62/x
  3. Step 3: Cross multiply
    21,678.98x = 32,520.87 × 8,529.62
  4. Step 4: Simplify right side
    21,678.98x = 277,390,663.17
  5. Step 5: Solve for x
    x = 277,390,663.17/21,678.98
  6. Step 6: Final answer
    x = 12,795.37

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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.