Home / 11,829.85-16,328.28-6,988.78

Finding the Fourth Proportional to 11,829.85, 16,328.28 and 6,988.78

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Solution

The fourth proportional to 11,829.85, 16,328.28 and 6,988.78 is: 9,646.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,829.85 : 16,328.28 = 6,988.78 : x
  2. Step 2: Convert to fraction form
    11,829.85/16,328.28 = 6,988.78/x
  3. Step 3: Cross multiply
    11,829.85x = 16,328.28 × 6,988.78
  4. Step 4: Simplify right side
    11,829.85x = 114,114,803.32
  5. Step 5: Solve for x
    x = 114,114,803.32/11,829.85
  6. Step 6: Final answer
    x = 9,646.35

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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.