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Finding the Fourth Proportional to 15,073.49, 20,803.80 and 9,106.02

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Solution

The fourth proportional to 15,073.49, 20,803.80 and 9,106.02 is: 12,567.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,073.49 : 20,803.80 = 9,106.02 : x
  2. Step 2: Convert to fraction form
    15,073.49/20,803.80 = 9,106.02/x
  3. Step 3: Cross multiply
    15,073.49x = 20,803.80 × 9,106.02
  4. Step 4: Simplify right side
    15,073.49x = 189,439,853.02
  5. Step 5: Solve for x
    x = 189,439,853.02/15,073.49
  6. Step 6: Final answer
    x = 12,567.75

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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.