Home / 21,170.09-31,748.65-14,638.25

Finding the Fourth Proportional to 21,170.09, 31,748.65 and 14,638.25

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Solution

The fourth proportional to 21,170.09, 31,748.65 and 14,638.25 is: 21,952.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.09 : 31,748.65 = 14,638.25 : x
  2. Step 2: Convert to fraction form
    21,170.09/31,748.65 = 14,638.25/x
  3. Step 3: Cross multiply
    21,170.09x = 31,748.65 × 14,638.25
  4. Step 4: Simplify right side
    21,170.09x = 464,744,675.86
  5. Step 5: Solve for x
    x = 464,744,675.86/21,170.09
  6. Step 6: Final answer
    x = 21,952.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.