Home / 11,985.09-16,555.55-10,867.29

Finding the Fourth Proportional to 11,985.09, 16,555.55 and 10,867.29

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Solution

The fourth proportional to 11,985.09, 16,555.55 and 10,867.29 is: 15,011.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.09 : 16,555.55 = 10,867.29 : x
  2. Step 2: Convert to fraction form
    11,985.09/16,555.55 = 10,867.29/x
  3. Step 3: Cross multiply
    11,985.09x = 16,555.55 × 10,867.29
  4. Step 4: Simplify right side
    11,985.09x = 179,913,962.96
  5. Step 5: Solve for x
    x = 179,913,962.96/11,985.09
  6. Step 6: Final answer
    x = 15,011.48

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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.