Home / 15,699.76-21,665.58-8,626.30

Finding the Fourth Proportional to 15,699.76, 21,665.58 and 8,626.30

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Solution

The fourth proportional to 15,699.76, 21,665.58 and 8,626.30 is: 11,904.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.76 : 21,665.58 = 8,626.30 : x
  2. Step 2: Convert to fraction form
    15,699.76/21,665.58 = 8,626.30/x
  3. Step 3: Cross multiply
    15,699.76x = 21,665.58 × 8,626.30
  4. Step 4: Simplify right side
    15,699.76x = 186,893,792.75
  5. Step 5: Solve for x
    x = 186,893,792.75/15,699.76
  6. Step 6: Final answer
    x = 11,904.25

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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.