Home / 21,167.34-29,209.95-12,217.74

Finding the Fourth Proportional to 21,167.34, 29,209.95 and 12,217.74

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Solution

The fourth proportional to 21,167.34, 29,209.95 and 12,217.74 is: 16,859.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.34 : 29,209.95 = 12,217.74 : x
  2. Step 2: Convert to fraction form
    21,167.34/29,209.95 = 12,217.74/x
  3. Step 3: Cross multiply
    21,167.34x = 29,209.95 × 12,217.74
  4. Step 4: Simplify right side
    21,167.34x = 356,879,574.51
  5. Step 5: Solve for x
    x = 356,879,574.51/21,167.34
  6. Step 6: Final answer
    x = 16,859.92

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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.