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Finding the Fourth Proportional to 12,907.51, 17,810.20 and 7,603.39

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Solution

The fourth proportional to 12,907.51, 17,810.20 and 7,603.39 is: 10,491.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.51 : 17,810.20 = 7,603.39 : x
  2. Step 2: Convert to fraction form
    12,907.51/17,810.20 = 7,603.39/x
  3. Step 3: Cross multiply
    12,907.51x = 17,810.20 × 7,603.39
  4. Step 4: Simplify right side
    12,907.51x = 135,417,896.58
  5. Step 5: Solve for x
    x = 135,417,896.58/12,907.51
  6. Step 6: Final answer
    x = 10,491.40

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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.