Home / 21,167.79-29,210.41-12,214.77

Finding the Fourth Proportional to 21,167.79, 29,210.41 and 12,214.77

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Solution

The fourth proportional to 21,167.79, 29,210.41 and 12,214.77 is: 16,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.79 : 29,210.41 = 12,214.77 : x
  2. Step 2: Convert to fraction form
    21,167.79/29,210.41 = 12,214.77/x
  3. Step 3: Cross multiply
    21,167.79x = 29,210.41 × 12,214.77
  4. Step 4: Simplify right side
    21,167.79x = 356,798,439.76
  5. Step 5: Solve for x
    x = 356,798,439.76/21,167.79
  6. Step 6: Final answer
    x = 16,855.72

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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.