Home / 21,488.84-29,654.26-11,928.72

Finding the Fourth Proportional to 21,488.84, 29,654.26 and 11,928.72

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Solution

The fourth proportional to 21,488.84, 29,654.26 and 11,928.72 is: 16,461.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,488.84 : 29,654.26 = 11,928.72 : x
  2. Step 2: Convert to fraction form
    21,488.84/29,654.26 = 11,928.72/x
  3. Step 3: Cross multiply
    21,488.84x = 29,654.26 × 11,928.72
  4. Step 4: Simplify right side
    21,488.84x = 353,737,364.35
  5. Step 5: Solve for x
    x = 353,737,364.35/21,488.84
  6. Step 6: Final answer
    x = 16,461.45

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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.