Home / 21,570.35-29,757.48-12,613.90

Finding the Fourth Proportional to 21,570.35, 29,757.48 and 12,613.90

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Solution

The fourth proportional to 21,570.35, 29,757.48 and 12,613.90 is: 17,401.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,570.35 : 29,757.48 = 12,613.90 : x
  2. Step 2: Convert to fraction form
    21,570.35/29,757.48 = 12,613.90/x
  3. Step 3: Cross multiply
    21,570.35x = 29,757.48 × 12,613.90
  4. Step 4: Simplify right side
    21,570.35x = 375,357,894.76
  5. Step 5: Solve for x
    x = 375,357,894.76/21,570.35
  6. Step 6: Final answer
    x = 17,401.57

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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.