Home / 20,712.49-28,586.95-12,214.10

Finding the Fourth Proportional to 20,712.49, 28,586.95 and 12,214.10

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Solution

The fourth proportional to 20,712.49, 28,586.95 and 12,214.10 is: 16,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.49 : 28,586.95 = 12,214.10 : x
  2. Step 2: Convert to fraction form
    20,712.49/28,586.95 = 12,214.10/x
  3. Step 3: Cross multiply
    20,712.49x = 28,586.95 × 12,214.10
  4. Step 4: Simplify right side
    20,712.49x = 349,163,804.92
  5. Step 5: Solve for x
    x = 349,163,804.92/20,712.49
  6. Step 6: Final answer
    x = 16,857.65

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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.