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Finding the Fourth Proportional to 15,004.62, 20,694.86 and 9,030.06

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Solution

The fourth proportional to 15,004.62, 20,694.86 and 9,030.06 is: 12,454.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004.62 : 20,694.86 = 9,030.06 : x
  2. Step 2: Convert to fraction form
    15,004.62/20,694.86 = 9,030.06/x
  3. Step 3: Cross multiply
    15,004.62x = 20,694.86 × 9,030.06
  4. Step 4: Simplify right side
    15,004.62x = 186,875,827.49
  5. Step 5: Solve for x
    x = 186,875,827.49/15,004.62
  6. Step 6: Final answer
    x = 12,454.55

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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.