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Finding the Fourth Proportional to 15,009.03, 20,710.89 and 8,294.40

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Solution

The fourth proportional to 15,009.03, 20,710.89 and 8,294.40 is: 11,445.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,009.03 : 20,710.89 = 8,294.40 : x
  2. Step 2: Convert to fraction form
    15,009.03/20,710.89 = 8,294.40/x
  3. Step 3: Cross multiply
    15,009.03x = 20,710.89 × 8,294.40
  4. Step 4: Simplify right side
    15,009.03x = 171,784,406.02
  5. Step 5: Solve for x
    x = 171,784,406.02/15,009.03
  6. Step 6: Final answer
    x = 11,445.40

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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.