Home / 20,981.92-28,952.70-12,026.98

Finding the Fourth Proportional to 20,981.92, 28,952.70 and 12,026.98

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Solution

The fourth proportional to 20,981.92, 28,952.70 and 12,026.98 is: 16,595.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.92 : 28,952.70 = 12,026.98 : x
  2. Step 2: Convert to fraction form
    20,981.92/28,952.70 = 12,026.98/x
  3. Step 3: Cross multiply
    20,981.92x = 28,952.70 × 12,026.98
  4. Step 4: Simplify right side
    20,981.92x = 348,213,543.85
  5. Step 5: Solve for x
    x = 348,213,543.85/20,981.92
  6. Step 6: Final answer
    x = 16,595.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.