Home / 10,860.28-14,992.29-8,172.50

Finding the Fourth Proportional to 10,860.28, 14,992.29 and 8,172.50

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Solution

The fourth proportional to 10,860.28, 14,992.29 and 8,172.50 is: 11,281.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,860.28 : 14,992.29 = 8,172.50 : x
  2. Step 2: Convert to fraction form
    10,860.28/14,992.29 = 8,172.50/x
  3. Step 3: Cross multiply
    10,860.28x = 14,992.29 × 8,172.50
  4. Step 4: Simplify right side
    10,860.28x = 122,524,415.06
  5. Step 5: Solve for x
    x = 122,524,415.06/10,860.28
  6. Step 6: Final answer
    x = 11,281.89

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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.