Home / 21,653.90-29,882.74-12,701.64

Finding the Fourth Proportional to 21,653.90, 29,882.74 and 12,701.64

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Solution

The fourth proportional to 21,653.90, 29,882.74 and 12,701.64 is: 17,528.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,653.90 : 29,882.74 = 12,701.64 : x
  2. Step 2: Convert to fraction form
    21,653.90/29,882.74 = 12,701.64/x
  3. Step 3: Cross multiply
    21,653.90x = 29,882.74 × 12,701.64
  4. Step 4: Simplify right side
    21,653.90x = 379,559,805.69
  5. Step 5: Solve for x
    x = 379,559,805.69/21,653.90
  6. Step 6: Final answer
    x = 17,528.47

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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.