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Finding the Fourth Proportional to 15,426.30, 21,292.02 and 9,054.30

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Solution

The fourth proportional to 15,426.30, 21,292.02 and 9,054.30 is: 12,497.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,426.30 : 21,292.02 = 9,054.30 : x
  2. Step 2: Convert to fraction form
    15,426.30/21,292.02 = 9,054.30/x
  3. Step 3: Cross multiply
    15,426.30x = 21,292.02 × 9,054.30
  4. Step 4: Simplify right side
    15,426.30x = 192,784,336.69
  5. Step 5: Solve for x
    x = 192,784,336.69/15,426.30
  6. Step 6: Final answer
    x = 12,497.12

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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.