Home / 20,963.13-28,931.22-12,011.82

Finding the Fourth Proportional to 20,963.13, 28,931.22 and 12,011.82

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Solution

The fourth proportional to 20,963.13, 28,931.22 and 12,011.82 is: 16,577.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,963.13 : 28,931.22 = 12,011.82 : x
  2. Step 2: Convert to fraction form
    20,963.13/28,931.22 = 12,011.82/x
  3. Step 3: Cross multiply
    20,963.13x = 28,931.22 × 12,011.82
  4. Step 4: Simplify right side
    20,963.13x = 347,516,607.02
  5. Step 5: Solve for x
    x = 347,516,607.02/20,963.13
  6. Step 6: Final answer
    x = 16,577.52

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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.