Home / 21,715.65-29,968.33-12,763.03

Finding the Fourth Proportional to 21,715.65, 29,968.33 and 12,763.03

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Solution

The fourth proportional to 21,715.65, 29,968.33 and 12,763.03 is: 17,613.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.65 : 29,968.33 = 12,763.03 : x
  2. Step 2: Convert to fraction form
    21,715.65/29,968.33 = 12,763.03/x
  3. Step 3: Cross multiply
    21,715.65x = 29,968.33 × 12,763.03
  4. Step 4: Simplify right side
    21,715.65x = 382,486,545.00
  5. Step 5: Solve for x
    x = 382,486,545.00/21,715.65
  6. Step 6: Final answer
    x = 17,613.41

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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.