Home / 10,988.86-15,164.91-6,511.89

Finding the Fourth Proportional to 10,988.86, 15,164.91 and 6,511.89

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Solution

The fourth proportional to 10,988.86, 15,164.91 and 6,511.89 is: 8,986.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,988.86 : 15,164.91 = 6,511.89 : x
  2. Step 2: Convert to fraction form
    10,988.86/15,164.91 = 6,511.89/x
  3. Step 3: Cross multiply
    10,988.86x = 15,164.91 × 6,511.89
  4. Step 4: Simplify right side
    10,988.86x = 98,752,242.06
  5. Step 5: Solve for x
    x = 98,752,242.06/10,988.86
  6. Step 6: Final answer
    x = 8,986.58

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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.