Home / 11,355.70-15,670.71-6,319.92

Finding the Fourth Proportional to 11,355.70, 15,670.71 and 6,319.92

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Solution

The fourth proportional to 11,355.70, 15,670.71 and 6,319.92 is: 8,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.70 : 15,670.71 = 6,319.92 : x
  2. Step 2: Convert to fraction form
    11,355.70/15,670.71 = 6,319.92/x
  3. Step 3: Cross multiply
    11,355.70x = 15,670.71 × 6,319.92
  4. Step 4: Simplify right side
    11,355.70x = 99,037,651.98
  5. Step 5: Solve for x
    x = 99,037,651.98/11,355.70
  6. Step 6: Final answer
    x = 8,721.40

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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.