Home / 13,111.02-18,072.14-8,860.77

Finding the Fourth Proportional to 13,111.02, 18,072.14 and 8,860.77

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Solution

The fourth proportional to 13,111.02, 18,072.14 and 8,860.77 is: 12,213.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.02 : 18,072.14 = 8,860.77 : x
  2. Step 2: Convert to fraction form
    13,111.02/18,072.14 = 8,860.77/x
  3. Step 3: Cross multiply
    13,111.02x = 18,072.14 × 8,860.77
  4. Step 4: Simplify right side
    13,111.02x = 160,133,031.64
  5. Step 5: Solve for x
    x = 160,133,031.64/13,111.02
  6. Step 6: Final answer
    x = 12,213.62

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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.