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Finding the Fourth Proportional to 12,358.95, 17,051.79 and 7,577.31

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Solution

The fourth proportional to 12,358.95, 17,051.79 and 7,577.31 is: 10,454.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358.95 : 17,051.79 = 7,577.31 : x
  2. Step 2: Convert to fraction form
    12,358.95/17,051.79 = 7,577.31/x
  3. Step 3: Cross multiply
    12,358.95x = 17,051.79 × 7,577.31
  4. Step 4: Simplify right side
    12,358.95x = 129,206,698.88
  5. Step 5: Solve for x
    x = 129,206,698.88/12,358.95
  6. Step 6: Final answer
    x = 10,454.50

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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.