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Finding the Fourth Proportional to 12,619.77, 17,415.63 and 7,030.77

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Solution

The fourth proportional to 12,619.77, 17,415.63 and 7,030.77 is: 9,702.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.77 : 17,415.63 = 7,030.77 : x
  2. Step 2: Convert to fraction form
    12,619.77/17,415.63 = 7,030.77/x
  3. Step 3: Cross multiply
    12,619.77x = 17,415.63 × 7,030.77
  4. Step 4: Simplify right side
    12,619.77x = 122,445,288.94
  5. Step 5: Solve for x
    x = 122,445,288.94/12,619.77
  6. Step 6: Final answer
    x = 9,702.66

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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.