Home / 21,440.79-29,587.77-12,488.94

Finding the Fourth Proportional to 21,440.79, 29,587.77 and 12,488.94

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Solution

The fourth proportional to 21,440.79, 29,587.77 and 12,488.94 is: 17,234.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.79 : 29,587.77 = 12,488.94 : x
  2. Step 2: Convert to fraction form
    21,440.79/29,587.77 = 12,488.94/x
  3. Step 3: Cross multiply
    21,440.79x = 29,587.77 × 12,488.94
  4. Step 4: Simplify right side
    21,440.79x = 369,519,884.26
  5. Step 5: Solve for x
    x = 369,519,884.26/21,440.79
  6. Step 6: Final answer
    x = 17,234.43

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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.