Home / 15,285.89-21,095.06-8,571.60

Finding the Fourth Proportional to 15,285.89, 21,095.06 and 8,571.60

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Solution

The fourth proportional to 15,285.89, 21,095.06 and 8,571.60 is: 11,829.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.89 : 21,095.06 = 8,571.60 : x
  2. Step 2: Convert to fraction form
    15,285.89/21,095.06 = 8,571.60/x
  3. Step 3: Cross multiply
    15,285.89x = 21,095.06 × 8,571.60
  4. Step 4: Simplify right side
    15,285.89x = 180,818,416.30
  5. Step 5: Solve for x
    x = 180,818,416.30/15,285.89
  6. Step 6: Final answer
    x = 11,829.11

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Double scale
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Similar ratio
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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.