Home / 15,657.48-21,607.09-8,583.90

Finding the Fourth Proportional to 15,657.48, 21,607.09 and 8,583.90

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Solution

The fourth proportional to 15,657.48, 21,607.09 and 8,583.90 is: 11,845.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.48 : 21,607.09 = 8,583.90 : x
  2. Step 2: Convert to fraction form
    15,657.48/21,607.09 = 8,583.90/x
  3. Step 3: Cross multiply
    15,657.48x = 21,607.09 × 8,583.90
  4. Step 4: Simplify right side
    15,657.48x = 185,473,099.85
  5. Step 5: Solve for x
    x = 185,473,099.85/15,657.48
  6. Step 6: Final answer
    x = 11,845.65

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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.