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Finding the Fourth Proportional to 12,907.60, 19,332.60 and 10,603.60

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Solution

The fourth proportional to 12,907.60, 19,332.60 and 10,603.60 is: 15,881.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.60 : 19,332.60 = 10,603.60 : x
  2. Step 2: Convert to fraction form
    12,907.60/19,332.60 = 10,603.60/x
  3. Step 3: Cross multiply
    12,907.60x = 19,332.60 × 10,603.60
  4. Step 4: Simplify right side
    12,907.60x = 204,995,157.36
  5. Step 5: Solve for x
    x = 204,995,157.36/12,907.60
  6. Step 6: Final answer
    x = 15,881.74

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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.