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Finding the Fourth Proportional to 13,021.55, 19,526.48 and 7,759.04

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Solution

The fourth proportional to 13,021.55, 19,526.48 and 7,759.04 is: 11,635.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,021.55 : 19,526.48 = 7,759.04 : x
  2. Step 2: Convert to fraction form
    13,021.55/19,526.48 = 7,759.04/x
  3. Step 3: Cross multiply
    13,021.55x = 19,526.48 × 7,759.04
  4. Step 4: Simplify right side
    13,021.55x = 151,506,602.95
  5. Step 5: Solve for x
    x = 151,506,602.95/13,021.55
  6. Step 6: Final answer
    x = 11,635.07

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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.