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Finding the Fourth Proportional to 12,038.94, 18,031.95 and 9,935.10

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Solution

The fourth proportional to 12,038.94, 18,031.95 and 9,935.10 is: 14,880.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,038.94 : 18,031.95 = 9,935.10 : x
  2. Step 2: Convert to fraction form
    12,038.94/18,031.95 = 9,935.10/x
  3. Step 3: Cross multiply
    12,038.94x = 18,031.95 × 9,935.10
  4. Step 4: Simplify right side
    12,038.94x = 179,149,226.45
  5. Step 5: Solve for x
    x = 179,149,226.45/12,038.94
  6. Step 6: Final answer
    x = 14,880.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.