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Finding the Fourth Proportional to 15,084.52, 20,803.98 and 9,707.80

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Solution

The fourth proportional to 15,084.52, 20,803.98 and 9,707.80 is: 13,388.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,084.52 : 20,803.98 = 9,707.80 : x
  2. Step 2: Convert to fraction form
    15,084.52/20,803.98 = 9,707.80/x
  3. Step 3: Cross multiply
    15,084.52x = 20,803.98 × 9,707.80
  4. Step 4: Simplify right side
    15,084.52x = 201,960,877.04
  5. Step 5: Solve for x
    x = 201,960,877.04/15,084.52
  6. Step 6: Final answer
    x = 13,388.62

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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.