Home / 11,355.59-15,670.58-6,319.69

Finding the Fourth Proportional to 11,355.59, 15,670.58 and 6,319.69

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Solution

The fourth proportional to 11,355.59, 15,670.58 and 6,319.69 is: 8,721.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,355.59 : 15,670.58 = 6,319.69 : x
  2. Step 2: Convert to fraction form
    11,355.59/15,670.58 = 6,319.69/x
  3. Step 3: Cross multiply
    11,355.59x = 15,670.58 × 6,319.69
  4. Step 4: Simplify right side
    11,355.59x = 99,033,136.95
  5. Step 5: Solve for x
    x = 99,033,136.95/11,355.59
  6. Step 6: Final answer
    x = 8,721.09

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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.