Home / 12,577.79-18,817.91-9,075.86

Finding the Fourth Proportional to 12,577.79, 18,817.91 and 9,075.86

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Solution

The fourth proportional to 12,577.79, 18,817.91 and 9,075.86 is: 13,578.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,577.79 : 18,817.91 = 9,075.86 : x
  2. Step 2: Convert to fraction form
    12,577.79/18,817.91 = 9,075.86/x
  3. Step 3: Cross multiply
    12,577.79x = 18,817.91 × 9,075.86
  4. Step 4: Simplify right side
    12,577.79x = 170,788,671.27
  5. Step 5: Solve for x
    x = 170,788,671.27/12,577.79
  6. Step 6: Final answer
    x = 13,578.59

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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.