Home / 12,378.98-17,089.63-9,560.94

Finding the Fourth Proportional to 12,378.98, 17,089.63 and 9,560.94

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Solution

The fourth proportional to 12,378.98, 17,089.63 and 9,560.94 is: 13,199.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.98 : 17,089.63 = 9,560.94 : x
  2. Step 2: Convert to fraction form
    12,378.98/17,089.63 = 9,560.94/x
  3. Step 3: Cross multiply
    12,378.98x = 17,089.63 × 9,560.94
  4. Step 4: Simplify right side
    12,378.98x = 163,392,927.05
  5. Step 5: Solve for x
    x = 163,392,927.05/12,378.98
  6. Step 6: Final answer
    x = 13,199.22

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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.