Home / 10,389.69-14,334.39-6,140.88

Finding the Fourth Proportional to 10,389.69, 14,334.39 and 6,140.88

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Solution

The fourth proportional to 10,389.69, 14,334.39 and 6,140.88 is: 8,472.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,389.69 : 14,334.39 = 6,140.88 : x
  2. Step 2: Convert to fraction form
    10,389.69/14,334.39 = 6,140.88/x
  3. Step 3: Cross multiply
    10,389.69x = 14,334.39 × 6,140.88
  4. Step 4: Simplify right side
    10,389.69x = 88,025,768.86
  5. Step 5: Solve for x
    x = 88,025,768.86/10,389.69
  6. Step 6: Final answer
    x = 8,472.42

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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.