Home / 11,389.69-15,717.36-6,354.15

Finding the Fourth Proportional to 11,389.69, 15,717.36 and 6,354.15

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Solution

The fourth proportional to 11,389.69, 15,717.36 and 6,354.15 is: 8,768.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,389.69 : 15,717.36 = 6,354.15 : x
  2. Step 2: Convert to fraction form
    11,389.69/15,717.36 = 6,354.15/x
  3. Step 3: Cross multiply
    11,389.69x = 15,717.36 × 6,354.15
  4. Step 4: Simplify right side
    11,389.69x = 99,870,463.04
  5. Step 5: Solve for x
    x = 99,870,463.04/11,389.69
  6. Step 6: Final answer
    x = 8,768.50

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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.